1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
|
.\" shorthand for double quote that works everywhere.
.ds q \N'34'
.TH xorg.conf __filemansuffix__ __vendorversion__
.SH NAME
xorg.conf, __xconfigdir__ \- configuration files for
Xorg X server
.SH INTRODUCTION
.B Xorg
supports several mechanisms for supplying/obtaining configuration and
run-time parameters: command line options, environment variables, the
xorg.conf and __xconfigdir__ configuration files, auto-detection,
and fallback defaults. When the same information is supplied in more
than one way, the highest precedence mechanism is used. The list of
mechanisms is ordered from highest precedence to lowest. Note that not
all parameters can be supplied via all methods. The available command
line options and environment variables (and some defaults) are
described in the Xserver(__appmansuffix__) and
Xorg(__appmansuffix__) manual pages. Most configuration file
parameters, with their defaults, are described below. Driver and module
specific configuration parameters are described in the relevant driver
or module manual page.
.SH DESCRIPTION
.B Xorg
uses a configuration file called
.I xorg.conf
and files ending in the suffix
.I .conf
from the directory
.I __xconfigdir__
for its initial setup.
The
.I xorg.conf
configuration file is searched for in the following places when the
server is started as a normal user:
.PP
.RS 4
.nf
.IR /etc/X11/ <cmdline>
.IR __projectroot__/etc/X11/ <cmdline>
.IB /etc/X11/ $XORGCONFIG
.IB __projectroot__/etc/X11/ $XORGCONFIG
.I /etc/X11/xorg.conf
.I /etc/xorg.conf
.IR __projectroot__/etc/X11/xorg.conf. <hostname>
.I __projectroot__/etc/X11/xorg.conf
.IR __projectroot__/lib/X11/xorg.conf. <hostname>
.I __projectroot__/lib/X11/xorg.conf
.fi
.RE
.PP
where
.I <cmdline>
is a relative path (with no \(lq..\(rq components) specified with the
.B \-config
command line option,
.B $XORGCONFIG
is the relative path (with no \(lq..\(rq components) specified by that
environment variable, and
.I <hostname>
is the machine's hostname as reported by
.BR gethostname (__libmansuffix__).
.PP
When the Xorg server is started by the \(lqroot\(rq user, the config file
search locations are as follows:
.PP
.RS 4
.nf
<cmdline>
.IR /etc/X11/ <cmdline>
.IR __projectroot__/etc/X11/ <cmdline>
.B $XORGCONFIG
.IB /etc/X11/ $XORGCONFIG
.IB __projectroot__/etc/X11/ $XORGCONFIG
.I /etc/X11/xorg.conf
.I /etc/xorg.conf
.IR __projectroot__/etc/X11/xorg.conf. <hostname>
.I __projectroot__/etc/X11/xorg.conf
.IR __projectroot__/lib/X11/xorg.conf. <hostname>
.I __projectroot__/lib/X11/xorg.conf
.fi
.RE
.PP
where
.I <cmdline>
is the path specified with the
.B \-config
command line option (which may be absolute or relative),
.B $XORGCONFIG
is the path specified by that
environment variable (absolute or relative),
.B $HOME
is the path specified by that environment variable (usually the home
directory), and
.I <hostname>
is the machine's hostname as reported by
.BR gethostname (__libmansuffix__).
.PP
Additional configuration files are searched for in the following
directories when the server is started as a normal user:
.PP
.RS 4
.nf
.IR /etc/X11/ <cmdline>
.IR __sysconfdir__/X11/ <cmdline>
.I /etc/X11/__xconfigdir__
.I __sysconfdir__/X11/__xconfigdir__
.fi
.RE
.PP
where
.I <cmdline>
is a relative path (with no \(lq..\(rq components) specified with the
.B \-configdir
command line option.
.PP
When the Xorg server is started by the \(lqroot\(rq user, the
config directory search locations are as follows:
.PP
.RS 4
.nf
<cmdline>
.IR /etc/X11/ <cmdline>
.IR __sysconfdir__/X11/ <cmdline>
.I /etc/X11/__xconfigdir__
.I __sysconfdir__/X11/__xconfigdir__
.fi
.RE
.PP
where
.I <cmdline>
is the path specified with the
.B \-configdir
command line option (which may be absolute or relative).
.PP
Finally, configuration files will also be searched for in directories
reserved for system use. These are to separate configuration files from
the vendor or 3rd party packages from those of local administration.
These files are found in the following directories:
.PP
.RS 4
.nf
.I /usr/share/X11/__xconfigdir__
.I __datadir__/X11/__xconfigdir__
.fi
.RE
.PP
The
.I xorg.conf
and
.I __xconfigdir__
files are composed of a number of sections which may be present in any order,
or omitted to use default configuration values.
Each section has the form:
.PP
.RS 4
.nf
.BI "Section \*q" SectionName \*q
.RI " " SectionEntry
...
.B EndSection
.fi
.RE
.PP
The section names are:
.PP
.RS 4
.nf
.BR "Files " "File pathnames"
.BR "ServerFlags " "Server flags"
.BR "Module " "Dynamic module loading"
.BR "Extensions " "Extension enabling"
.BR "InputDevice " "Input device description"
.BR "InputClass " "Input class description"
.BR "Device " "Graphics device description"
.BR "VideoAdaptor " "Xv video adaptor description"
.BR "Monitor " "Monitor description"
.BR "Modes " "Video modes descriptions"
.BR "Screen " "Screen configuration"
.BR "ServerLayout " "Overall layout"
.BR "DRI " "DRI\-specific configuration"
.BR "Vendor " "Vendor\-specific configuration"
.fi
.RE
.PP
The following obsolete section names are still recognised for compatibility
purposes.
In new config files, the
.B InputDevice
section should be used instead.
.PP
.RS 4
.nf
.BR "Keyboard " "Keyboard configuration"
.BR "Pointer " "Pointer/mouse configuration"
.fi
.RE
.PP
The old
.B XInput
section is no longer recognised.
.PP
The
.B ServerLayout
sections are at the highest level.
They bind together the input and output devices that will be used in a session.
The input devices are described in the
.B InputDevice
sections.
Output devices usually consist of multiple independent components (e.g.,
a graphics board and a monitor).
These multiple components are bound together in the
.B Screen
sections, and it is these that are referenced by the
.B ServerLayout
section.
Each
.B Screen
section binds together a graphics board and a monitor.
The graphics boards are described in the
.B Device
sections, and the monitors are described in the
.B Monitor
sections.
.PP
Config file keywords are case\-insensitive, and \(lq_\(rq characters are
ignored.
Most strings (including
.B Option
names) are also case-insensitive, and insensitive to white space and
\(lq_\(rq characters.
.PP
Each config file entry usually takes up a single line in the file. They
consist of a keyword, which is possibly followed by one or more arguments,
with the number and types of the arguments depending on the keyword.
The argument types are:
.PP
.RS 4
.nf
.BR "Integer " "an integer number in decimal, hex or octal"
.BR "Real " "a floating point number"
.BR "String " "a string enclosed in double quote marks (\*q)"
.fi
.RE
.PP
Note: hex integer values must be prefixed with \(lq0x\(rq, and octal values
with \(lq0\(rq.
.PP
A special keyword called
.B Option
may be used to provide free\-form data to various components of the server.
The
.B Option
keyword takes either one or two string arguments.
The first is the option name, and the optional second argument is the
option value.
Some commonly used option value types include:
.PP
.RS 4
.nf
.BR "Integer " "an integer number in decimal, hex or octal"
.BR "Real " "a floating point number"
.BR "String " "a sequence of characters"
.BR "Boolean " "a boolean value (see below)"
.BR "Frequency " "a frequency value (see below)"
.fi
.RE
.PP
Note that
.I all
.B Option
values, not just strings, must be enclosed in quotes.
.PP
Boolean options may optionally have a value specified.
When no value is specified, the option's value is
.BR TRUE .
The following boolean option values are recognised as
.BR TRUE :
.PP
.RS 4
.BR 1 ,
.BR on ,
.BR true ,
.B yes
.RE
.PP
and the following boolean option values are recognised as
.BR FALSE :
.PP
.RS 4
.BR 0 ,
.BR off ,
.BR false ,
.B no
.RE
.PP
If an option name is prefixed with
.RB \*q No \*q,
then the option value is negated.
.PP
Example: the following option entries are equivalent:
.PP
.RS 4
.nf
.B "Option \*qAccel\*q \*qOff\*q"
.B "Option \*qNoAccel\*q"
.B "Option \*qNoAccel\*q \*qOn\*q"
.B "Option \*qAccel\*q \*qfalse\*q"
.B "Option \*qAccel\*q \*qno\*q"
.fi
.RE
.PP
Frequency option values consist of a real number that is optionally
followed by one of the following frequency units:
.PP
.RS 4
.BR Hz ,
.BR k ,
.BR kHz ,
.BR M ,
.B MHz
.RE
.PP
When the unit name is omitted, the correct units will be determined from
the value and the expectations of the appropriate range of the value.
It is recommended that the units always be specified when using frequency
option values to avoid any errors in determining the value.
.SH "FILES SECTION"
The
.B Files
section is used to specify some path names required by the server.
Some of these paths can also be set from the command line (see
.BR Xserver (__appmansuffix__)
and
.BR Xorg (__appmansuffix__)).
The command line settings override the values specified in the config
file.
The
.B Files
section is optional, as are all of the entries that may appear in it.
.PP
The entries that can appear in this section are:
.TP 7
.BI "FontPath \*q" path \*q
sets the search path for fonts.
This path is a comma separated list of font path elements which the Xorg
server searches for font databases.
Multiple
.B FontPath
entries may be specified, and they will be concatenated to build up the
fontpath used by the server. Font path elements can be absolute
directory paths, catalogue directories or a font server identifier. The
formats of the later two are explained below:
.PP
.RS 7
Catalogue directories:
.PP
.RS 4
Catalogue directories can be specified using the prefix \fBcatalogue:\fR
before the directory name. The directory can then be populated with
symlinks pointing to the real font directories, using the following
syntax in the symlink name:
.PP
.RS 4
.IR <identifier> : [attribute]: pri= <priority>
.RE
.PP
where
.I <identifier>
is an alphanumeric identifier,
.I [attribute]
is an attribute which will be passed to the underlying FPE and
.I <priority>
is a number used to order the fontfile FPEs. Examples:
.PP
.RS 4
.nf
.I 75dpi:unscaled:pri=20 -> /usr/share/X11/fonts/75dpi
.I gscript:pri=60 -> /usr/share/fonts/default/ghostscript
.I misc:unscaled:pri=10 \-> /usr/share/X11/fonts/misc
.fi
.PP
.RE
.RE
.RE
.PP
.RS 7
Font server identifiers:
.PP
.RS 4
Font server identifiers have the form:
.RS 4
.PP
.IR <trans> / <hostname> : <port\-number>
.RE
.PP
where
.I <trans>
is the transport type to use to connect to the font server (e.g.,
.B unix
for UNIX\-domain sockets or
.B tcp
for a TCP/IP connection),
.I <hostname>
is the hostname of the machine running the font server, and
.I <port\-number>
is the port number that the font server is listening on (usually 7100).
.RE
.PP
When this entry is not specified in the config file, the server falls back
to the compiled\-in default font path, which contains the following
font path elements (which can be set inside a catalogue directory):
.PP
.RS 4
.nf
.I __datadir__/fonts/X11/misc/
.I __datadir__/fonts/X11/TTF/
.I __datadir__/fonts/X11/OTF/
.I __datadir__/fonts/X11/Type1/
.I __datadir__/fonts/X11/100dpi/
.I __datadir__/fonts/X11/75dpi/
.fi
.RE
.PP
Font path elements that are found to be invalid are removed from the
font path when the server starts up.
.RE
.TP 7
.BI "ModulePath \*q" path \*q
sets the search path for loadable Xorg server modules.
This path is a comma separated list of directories which the Xorg server
searches for loadable modules loading in the order specified.
Multiple
.B ModulePath
entries may be specified, and they will be concatenated to build the
module search path used by the server. The default module path is
.PP
.RS 11
__modulepath__
.RE
.\" The LogFile keyword is not currently implemented
.ig
.TP 7
.BI "LogFile \*q" path \*q
sets the name of the Xorg server log file.
The default log file name is
.PP
.RS 11
.RI __logdir__/Xorg. <n> .log
.RE
.PP
.RS 7
where
.I <n>
is the display number for the Xorg server.
..
.TP 7
.BI "XkbDir \*q" path \*q
sets the base directory for keyboard layout files. The
.B \-xkbdir
command line option can be used to override this. The default directory is
.PP
.RS 11
__xkbdir__
.RE
.SH "SERVERFLAGS SECTION"
In addition to options specific to this section (described below), the
.B ServerFlags
section is used to specify some global
Xorg server options.
All of the entries in this section are
.BR Options ,
although for compatibility purposes some of the old style entries are
still recognised.
Those old style entries are not documented here, and using them is
discouraged.
The
.B ServerFlags
section is optional, as are the entries that may be specified in it.
.PP
.B Options
specified in this section (with the exception of the
.B \*qDefaultServerLayout\*q
.BR Option )
may be overridden by
.B Options
specified in the active
.B ServerLayout
section.
Options with command line equivalents are overridden when their command
line equivalent is used.
The options recognised by this section are:
.TP 7
.BI "Option \*qDefaultServerLayout\*q \*q" layout\-id \*q
This specifies the default
.B ServerLayout
section to use in the absence of the
.B \-layout
command line option.
.TP 7
.BI "Option \*qNoTrapSignals\*q \*q" boolean \*q
This prevents the Xorg server from trapping a range of unexpected fatal
signals and exiting cleanly.
Instead, the Xorg server will die and drop core where the fault occurred.
The default behaviour is for the Xorg server to exit cleanly, but still drop a
core file.
In general you never want to use this option unless you are debugging an Xorg
server problem and know how to deal with the consequences.
.TP 7
.BI "Option \*qUseSIGIO\*q \*q" boolean \*q
This controls whether the Xorg server requests that events from
input devices be reported via a SIGIO signal handler (also known as SIGPOLL
on some platforms), or only reported via the standard select(3) loop.
The default behaviour is platform specific. In general you do not want to
use this option unless you are debugging the Xorg server, or
working around a specific bug until it is fixed, and understand the
consequences.
.TP 7
.BI "Option \*qDontVTSwitch\*q \*q" boolean \*q
This disallows the use of the
.BI Ctrl+Alt+F n
sequence (where
.RI F n
refers to one of the numbered function keys).
That sequence is normally used to switch to another \*qvirtual terminal\*q
on operating systems that have this feature.
When this option is enabled, that key sequence has no special meaning and
is passed to clients.
Default: off.
.TP 7
.BI "Option \*qDontZap\*q \*q" boolean \*q
This disallows the use of the
.B Terminate_Server
XKB action (usually on Ctrl+Alt+Backspace, depending on XKB options).
This action is normally used to terminate the Xorg server.
When this option is enabled, the action has no effect.
Default: off.
.TP 7
.BI "Option \*qDontZoom\*q \*q" boolean \*q
This disallows the use of the
.B Ctrl+Alt+Keypad\-Plus
and
.B Ctrl+Alt+Keypad\-Minus
sequences.
These sequences allows you to switch between video modes.
When this option is enabled, those key sequences have no special meaning
and are passed to clients.
Default: off.
.TP 7
.BI "Option \*qDisableVidModeExtension\*q \*q" boolean \*q
This disables the parts of the VidMode extension used by the xvidtune client
that can be used to change the video modes.
Default: the VidMode extension is enabled.
.TP 7
.BI "Option \*qAllowNonLocalXvidtune\*q \*q" boolean \*q
This allows the xvidtune client (and other clients that use the VidMode
extension) to connect from another host.
Default: off.
.TP 7
.BI "Option \*qAllowMouseOpenFail\*q \*q" boolean \*q
This tells the mousedrv(__drivermansuffix__) and vmmouse(__drivermansuffix__)
drivers to not report failure if the mouse device can't be opened/initialised.
It has no effect on the evdev(__drivermansuffix__) or other drivers.
Default: false.
.TP 7
.BI "Option \*qBlankTime\*q \*q" time \*q
sets the inactivity timeout for the
.B blank
phase of the screensaver.
.I time
is in minutes.
This is equivalent to the Xorg server's
.B \-s
flag, and the value can be changed at run\-time with
.BR xset(__appmansuffix__).
Default: 10 minutes.
.TP 7
.BI "Option \*qStandbyTime\*q \*q" time \*q
sets the inactivity timeout for the
.B standby
phase of DPMS mode.
.I time
is in minutes, and the value can be changed at run\-time with
.BR xset(__appmansuffix__).
Default: 10 minutes.
This is only suitable for VESA DPMS compatible monitors, and may not be
supported by all video drivers.
It is only enabled for screens that have the
.B \*qDPMS\*q
option set (see the MONITOR section below).
.TP 7
.BI "Option \*qSuspendTime\*q \*q" time \*q
sets the inactivity timeout for the
.B suspend
phase of DPMS mode.
.I time
is in minutes, and the value can be changed at run\-time with
.BR xset(__appmansuffix__).
Default: 10 minutes.
This is only suitable for VESA DPMS compatible monitors, and may not be
supported by all video drivers.
It is only enabled for screens that have the
.B \*qDPMS\*q
option set (see the MONITOR section below).
.TP 7
.BI "Option \*qOffTime\*q \*q" time \*q
sets the inactivity timeout for the
.B off
phase of DPMS mode.
.I time
is in minutes, and the value can be changed at run\-time with
.BR xset(__appmansuffix__).
Default: 10 minutes.
This is only suitable for VESA DPMS compatible monitors, and may not be
supported by all video drivers.
It is only enabled for screens that have the
.B \*qDPMS\*q
option set (see the MONITOR section below).
.TP 7
.BI "Option \*qPixmap\*q \*q" bpp \*q
This sets the pixmap format to use for depth 24.
Allowed values for
.I bpp
are 24 and 32.
Default: 32 unless driver constraints don't allow this (which is rare).
Note: some clients don't behave well when this value is set to 24.
.TP 7
.BI "Option \*qNoPM\*q \*q" boolean \*q
Disables something to do with power management events.
Default: PM enabled on platforms that support it.
.TP 7
.BI "Option \*qXinerama\*q \*q" boolean \*q
enable or disable XINERAMA extension.
Default is disabled.
.TP 7
.BI "Option \*qAIGLX\*q \*q" boolean \*q
enable or disable AIGLX. AIGLX is enabled by default.
.TP 7
.BI "Option \*qDRI2\*q \*q" boolean \*q
enable or disable DRI2. DRI2 is disabled by default.
.TP 7
.BI "Option \*qGlxVisuals\*q \*q" string \*q
This option controls how many GLX visuals the GLX modules sets up.
The default value is
.BR "typical" ,
which will setup up a typical subset of
the GLXFBConfigs provided by the driver as GLX visuals. Other options are
.BR "minimal" ,
which will set up the minimal set allowed by the GLX specification and
.BR "all"
which will setup GLX visuals for all GLXFBConfigs.
.TP 7
.BI "Option \*qUseDefaultFontPath\*q \*q" boolean \*q
Include the default font path even if other paths are specified in
xorg.conf. If enabled, other font paths are included as well. Enabled by
default.
.TP 7
.BI "Option \*qIgnoreABI\*q \*q" boolean \*q
Allow modules built for a different, potentially incompatible version of
the X server to load. Disabled by default.
.TP 7
.BI "Option \*qAutoAddDevices\*q \*q" boolean \*q
If this option is disabled, then no devices will be added from the HAL or
udev backends. Enabled by default.
.TP 7
.BI "Option \*qAutoEnableDevices\*q \*q" boolean \*q
If this option is disabled, then the devices will be added (and the
DevicePresenceNotify event sent), but not enabled, thus leaving policy up
to the client.
Enabled by default.
.TP 7
.BI "Option \*qLog\*q \*q" string \*q
This option controls whether the log is flushed and/or synced to disk after
each message.
Possible values are
.B flush
or
.BR sync .
Unset by default.
.SH "MODULE SECTION"
The
.B Module
section is used to specify which Xorg server modules should be loaded.
This section is ignored when the Xorg server is built in static form.
The type of modules normally loaded in this section are Xorg server
extension modules.
Most other module types are loaded automatically when they are needed via
other mechanisms.
The
.B Module
section is optional, as are all of the entries that may be specified in
it.
.PP
Entries in this section may be in two forms.
The first and most commonly used form is an entry that uses the
.B Load
keyword, as described here:
.TP 7
.BI "Load \*q" modulename \*q
This instructs the server to load the module called
.IR modulename .
The module name given should be the module's standard name, not the
module file name.
The standard name is case\-sensitive, and does not include the \(lqlib\(rq
or \(lqcyg\(rq prefixes, or the \(lq.so\(rq or \(lq.dll\(rq suffixes.
.PP
.RS 7
Example: the DRI extension module can be loaded with the following entry:
.PP
.RS 4
.B "Load \*qdri\*q"
.RE
.RE
.TP 7
.BI "Disable \*q" modulename \*q
This instructs the server to not load the module called
.IR modulename .
Some modules are loaded by default in the server, and this overrides that
default. If a
.B Load
instruction is given for the same module, it overrides the
.B Disable
instruction and the module is loaded. The module name given should be the
module's standard name, not the module file name. As with the
.B Load
instruction, the standard name is case-sensitive, and does not include the
"lib" prefix, or the ".a", ".o", or ".so" suffixes.
.PP
The second form of entry is a
.BR SubSection,
with the subsection name being the module name, and the contents of the
.B SubSection
being
.B Options
that are passed to the module when it is loaded.
.PP
Example: the extmod module (which contains a miscellaneous group of
server extensions) can be loaded, with the XFree86\-DGA extension
disabled by using the following entry:
.PP
.RS 4
.nf
.B "SubSection \*qextmod\*q"
.B " Option \*qomit XFree86\-DGA\*q"
.B EndSubSection
.fi
.RE
.PP
Modules are searched for in each directory specified in the
.B ModulePath
search path, and in the drivers, extensions, input, internal, and
multimedia subdirectories of each of those directories.
In addition to this, operating system specific subdirectories of all
the above are searched first if they exist.
.PP
To see what extension modules are available, check the extensions
subdirectory under:
.PP
.RS 4
.nf
__modulepath__
.fi
.RE
.PP
The \(lqextmod\(rq, \(lqdbe\(rq, \(lqdri\(rq, \(lqdri2\(rq, \(lqglx\(rq,
and \(lqrecord\(rq extension modules are loaded automatically, if they
are present, unless disabled with \*qDisable\*q entries.
It is recommended
that at very least the \(lqextmod\(rq extension module be loaded.
If it isn't, some commonly used server extensions (like the SHAPE
extension) will not be available.
.SH "EXTENSIONS SECTION"
The
.B Extensions
section is used to specify which X11 protocol extensions should be enabled
or disabled.
The
.B Extensions
section is optional, as are all of the entries that may be specified in
it.
.PP
Entries in this section are listed as Option statements with the name of
the extension as the first argument, and a boolean value as the second.
The extension name is case\-sensitive, and matches the form shown in the output
of \*qXorg -extension ?\*q.
.PP
.RS 7
Example: the MIT-SHM extension can be disabled with the following entry:
.PP
.RS 4
.nf
.B "Section \*qExtensions\*q"
.B " Option \*qMIT-SHM\*q \*qDisable\*q"
.B "EndSection"
.fi
.RE
.RE
.SH "INPUTDEVICE SECTION"
The config file may have multiple
.B InputDevice
sections.
Recent X servers employ HAL or udev backends for input device enumeration
and input hotplugging. It is usually not
necessary to provide
.B InputDevice
sections in the xorg.conf if hotplugging is in use (i.e. AutoAddDevices is
enabled). If hotplugging is enabled,
.B InputDevice
sections using the
.B mouse, kbd
and
.B vmmouse
driver will be ignored.
.PP
If hotplugging is disabled, there will normally
be at least two: one for the core (primary) keyboard
and one for the core pointer.
If either of these two is missing, a default configuration for the missing
ones will be used. In the absence of an explicitly specified core input
device, the first
.B InputDevice
marked as
.B CorePointer
(or
.BR CoreKeyboard )
is used.
If there is no match there, the first
.B InputDevice
that uses the \(lqmouse\(rq (or \(lqkbd\(rq) driver is used.
The final fallback is to use built\-in default configurations.
Currently the default configuration may not work as expected on all platforms.
.PP
.B InputDevice
sections have the following format:
.PP
.RS 4
.nf
.B "Section \*qInputDevice\*q"
.BI " Identifier \*q" name \*q
.BI " Driver \*q" inputdriver \*q
.I " options"
.I " ..."
.B "EndSection"
.fi
.RE
.PP
The
.B Identifier
and
.B Driver
entries are required in all
.B InputDevice
sections.
All other entries are optional.
.PP
The
.B Identifier
entry specifies the unique name for this input device.
The
.B Driver
entry specifies the name of the driver to use for this input device.
When using the loadable server, the input driver module
.RI \*q inputdriver \*q
will be loaded for each active
.B InputDevice
section.
An
.B InputDevice
section is considered active if it is referenced by an active
.B ServerLayout
section, if it is referenced by the
.B \-keyboard
or
.B \-pointer
command line options, or if it is selected implicitly as the core pointer
or keyboard device in the absence of such explicit references.
The most commonly used input drivers are
.BR evdev (__drivermansuffix__)
on Linux systems, and
.BR kbd (__drivermansuffix__)
and
.BR mousedrv (__drivermansuffix__)
on other platforms.
.PP
.PP
.B InputDevice
sections recognise some driver\-independent
.BR Options ,
which are described here.
See the individual input driver manual pages for a description of the
device\-specific options.
.TP 7
.BI "Option \*qAutoServerLayout\*q \*q" boolean \*q
Always add the device to the ServerLayout section used by this instance of
the server. This affects implied layouts as well as explicit layouts
specified in the configuration and/or on the command line.
.TP 7
.BI "Option \*qCorePointer\*q"
Deprecated, see
.B Floating
.TP 7
.BI "Option \*qCoreKeyboard\*q"
Deprecated, see
.B Floating
.TP 7
.BI "Option \*qAlwaysCore\*q \*q" boolean \*q
Deprecated, see
.B Floating
.TP 7
.BI "Option \*qSendCoreEvents\*q \*q" boolean \*q
Deprecated, see
.B Floating
.TP 7
.BI "Option \*qFloating\*q \*q" boolean \*q
When enabled, the input device is set up floating and does not
report events through any master device or control a cursor. The device is
only available to clients using the X Input Extension API. This option is
disabled by default.
The options
.B CorePointer,
.B CoreKeyboard,
.B AlwaysCore,
and
.B SendCoreEvents,
are the inverse of option
.B Floating
(i.e.
.B SendCoreEvents \*qon\*q
is equivalent to
.B Floating \*qoff\*q
).
This option controls the startup behavior only, a device
may be reattached or set floating at runtime.
.TP 7
.BI "Option \*qTransformationMatrix\*q \*q" a " " b " " c " " d " " e " " f " " g " " h " " i \*q
Specifies the 3x3 transformation matrix for absolute input devices. The
input device will be bound to the area given in the matrix. In most
configurations, "a" and "e" specify the width and height of the area the
device is bound to, and "c" and "f" specify the x and y offset of the area.
The value range is 0 to 1, where 1 represents the width or height of all
root windows together, 0.5 represents half the area, etc. The values
represent a 3x3 matrix, with the first, second and third group of three
values representing the first, second and third row of the matrix,
respectively. The identity matrix is "1 0 0 0 1 0 0 0 1".
.SS POINTER ACCELERATION
For pointing devices, the following options control how the pointer
is accelerated or decelerated with respect to physical device motion. Most of
these can be adjusted at runtime, see the xinput(1) man page for details. Only
the most important acceleration options are discussed here.
.TP 7
.BI "Option \*qAccelerationProfile\*q \*q" integer \*q
Select the profile. In layman's terms, the profile constitutes the "feeling" of
the acceleration. More formally, it defines how the transfer function (actual
acceleration as a function of current device velocity and acceleration controls)
is constructed. This is mainly a matter of personal preference.
.PP
.RS 6
.nf
.B " 0 classic (mostly compatible)"
.B "-1 none (only constant deceleration is applied)"
.B " 1 device-dependent"
.B " 2 polynomial (polynomial function)"
.B " 3 smooth linear (soft knee, then linear)"
.B " 4 simple (normal when slow, otherwise accelerated)"
.B " 5 power (power function)"
.B " 6 linear (more speed, more acceleration)"
.B " 7 limited (like linear, but maxes out at threshold)"
.fi
.RE
.TP 7
.BI "Option \*qConstantDeceleration\*q \*q" real \*q
Makes the pointer go
.B deceleration
times slower than normal. Most useful for high-resolution devices.
.TP 7
.BI "Option \*qAdaptiveDeceleration\*q \*q" real \*q
Allows to actually decelerate the pointer when going slow. At most, it will be
.B adaptive deceleration
times slower. Enables precise pointer placement without sacrificing speed.
.TP 7
.BI "Option \*qAccelerationScheme\*q \*q" string \*q
Selects the scheme, which is the underlying algorithm.
.PP
.RS 7
.nf
.B "predictable default algorithm (behaving more predictable)"
.B "lightweight old acceleration code (as specified in the X protocol spec)"
.B "none no acceleration or deceleration"
.fi
.RE
.TP 7
.BI "Option \*qAccelerationNumerator\*q \*q" integer \*q
.TP 7
.BI "Option \*qAccelerationDenominator\*q \*q" integer \*q
Set numerator and denominator of the acceleration factor. The acceleration
factor is a rational which, together with threshold, can be used to tweak
profiles to suit the users needs. The
.B simple
and
.B limited
profiles use it directly (i.e. they accelerate by the factor), for other
profiles it should hold that a higher acceleration factor leads to a faster
pointer. Typically, 1 is unaccelerated and values up to 5 are sensible.
.TP 7
.BI "Option \*qAccelerationThreshold\*q \*q" integer \*q
Set the threshold, which is roughly the velocity (usually device units per 10
ms) required for acceleration to become effective. The precise effect varies
with the profile however.
.SH "INPUTCLASS SECTION"
The config file may have multiple
.B InputClass
sections.
These sections are optional and are used to provide configuration for a
class of input devices as they are automatically added. An input device can
match more than one
.B InputClass
section. Each class can override settings from a previous class, so it is
best to arrange the sections with the most generic matches first.
.PP
.B InputClass
sections have the following format:
.PP
.RS 4
.nf
.B "Section \*qInputClass\*q"
.BI " Identifier \*q" name \*q
.I " entries"
.I " ..."
.I " options"
.I " ..."
.B "EndSection"
.fi
.RE
.PP
The
.B Identifier
entry is required in all
.B InputClass
sections.
All other entries are optional.
.PP
The
.B Identifier
entry specifies the unique name for this input class.
The
.B Driver
entry specifies the name of the driver to use for this input device.
After all classes have been examined, the
.RI \*q inputdriver \*q
module from the first
.B Driver
entry will be enabled when using the loadable server.
.PP
When an input device is automatically added, its characteristics are
checked against all
.B InputClass
sections. Each section can contain optional entries to narrow the match
of the class. If none of the optional entries appear, the
.B InputClass
section is generic and will match any input device. If more than one of
these entries appear, they all must match for the configuration to apply.
.PP
There are two types of match entries used in
.B InputClass
sections. The first allows various tokens to be matched against attributes
of the device. An entry can be constructed to match attributes from different
devices by separating arguments with a '|' character. Multiple entries of the
same type may be supplied to add multiple matching conditions on the same
attribute. For example:
.PP
.RS 4
.nf
.B "Section \*qInputClass\*q"
.B " Identifier \*qMy Class\*q"
.B " # product string must contain example and
.B " # either gizmo or gadget
.B " MatchProduct \*qexample\*q
.B " MatchProduct \*qgizmo|gadget\*q
.I " ..."
.B "EndSection"
.fi
.RE
.TP 7
.BI "MatchProduct \*q" matchproduct \*q
This entry can be used to check if the substring
.RI \*q matchproduct \*q
occurs in the device's product name.
.TP 7
.BI "MatchVendor \*q" matchvendor \*q
This entry can be used to check if the substring
.RI \*q matchvendor \*q
occurs in the device's vendor name.
.TP 7
.BI "MatchDevicePath \*q" matchdevice \*q
This entry can be used to check if the device file matches the
.RI \*q matchdevice \*q
pathname pattern.
.TP 7
.BI "MatchOS \*q" matchos \*q
This entry can be used to check if the operating system matches the
case-insensitive
.RI \*q matchos \*q
string. This entry is only supported on platforms providing the
.BR uname (2)
system call.
.TP 7
.BI "MatchPnPID \*q" matchpnp \*q
The device's Plug and Play (PnP) ID can be checked against the
.RI \*q matchpnp \*q
shell wildcard pattern.
.TP 7
.BI "MatchUSBID \*q" matchusb \*q
The device's USB ID can be checked against the
.RI \*q matchusb \*q
shell wildcard pattern. The ID is constructed as lowercase hexadecimal numbers
separated by a ':'. This is the same format as the
.BR lsusb (8)
program.
.TP 7
.BI "MatchDriver \*q" matchdriver \*q
Check the case-sensitive string
.RI \*q matchdriver \*q
against the currently configured driver of the device. Ordering of sections
using this entry is important since it will not match unless the driver has
been set by the config backend or a previous
.B InputClass
section.
.TP 7
.BI "MatchTag \*q" matchtag \*q
This entry can be used to check if tags assigned by the config backend
matches the
.RI \*q matchtag \*q
pattern. A match is found if at least one of the tags given in
.RI \*q matchtag \*q
matches at least one of the tags assigned by the backend.
.TP 7
.BI "MatchLayout \*q" matchlayout \*q
Check the case-sensitive string
.RI \*q matchlayout \*q
against the currently active
.B ServerLayout
section. The empty string "" matches an implicit layout which appears
if no named
.B ServerLayout
sections have been found.
.PP
The second type of entry is used to match device types. These entries take a
boolean argument similar to
.B Option
entries.
.TP 7
.BI "MatchIsKeyboard \*q" bool \*q
.TP 7
.BI "MatchIsPointer \*q" bool \*q
.TP 7
.BI "MatchIsJoystick \*q" bool \*q
.TP 7
.BI "MatchIsTablet \*q" bool \*q
.TP 7
.BI "MatchIsTouchpad \*q" bool \*q
.TP 7
.BI "MatchIsTouchscreen \*q" bool \*q
.PP
When an input device has been matched to the
.B InputClass
section, any
.B Option
entries are applied to the device. One
.B InputClass
specific
.B Option
is recognized. See the
.B InputDevice
section above for a description of the remaining
.B Option
entries.
.TP 7
.BI "Option \*qIgnore\*q \*q" boolean \*q
This optional entry specifies that the device should be ignored entirely,
and not added to the server. This can be useful when the device is handled
by another program and no X events should be generated.
.SH "DEVICE SECTION"
The config file may have multiple
.B Device
sections.
There must be at least one, for the video card being used.
.PP
.B Device
sections have the following format:
.PP
.RS 4
.nf
.B "Section \*qDevice\*q"
.BI " Identifier \*q" name \*q
.BI " Driver \*q" driver \*q
.I " entries"
.I " ..."
.B "EndSection"
.fi
.RE
.PP
The
.B Identifier
and
.B Driver
entries are required in all
.B Device
sections. All other entries are optional.
.PP
The
.B Identifier
entry specifies the unique name for this graphics device.
The
.B Driver
entry specifies the name of the driver to use for this graphics device.
When using the loadable server, the driver module
.RI \*q driver \*q
will be loaded for each active
.B Device
section.
A
.B Device
section is considered active if it is referenced by an active
.B Screen
section.
.PP
.B Device
sections recognise some driver\-independent entries and
.BR Options ,
which are described here.
Not all drivers make use of these
driver\-independent entries, and many of those that do don't require them
to be specified because the information is auto\-detected.
See the individual graphics driver manual pages for further information
about this, and for a description of the device\-specific options.
Note that most of the
.B Options
listed here (but not the other entries) may be specified in the
.B Screen
section instead of here in the
.B Device
section.
.TP 7
.BI "BusID \*q" bus\-id \*q
This specifies the bus location of the graphics card.
For PCI/AGP cards,
the
.I bus\-id
string has the form
.BI PCI: bus : device : function
(e.g., \(lqPCI:1:0:0\(rq might be appropriate for an AGP card).
This field is usually optional in single-head configurations when using
the primary graphics card.
In multi-head configurations, or when using a secondary graphics card in a
single-head configuration, this entry is mandatory.
Its main purpose is to make an unambiguous connection between the device
section and the hardware it is representing.
This information can usually be found by running the pciaccess tool
scanpci.
.TP 7
.BI "Screen " number
This option is mandatory for cards where a single PCI entity can drive more
than one display (i.e., multiple CRTCs sharing a single graphics accelerator
and video memory).
One
.B Device
section is required for each head, and this
parameter determines which head each of the
.B Device
sections applies to.
The legal values of
.I number
range from 0 to one less than the total number of heads per entity.
Most drivers require that the primary screen (0) be present.
.TP 7
.BI "Chipset \*q" chipset \*q
This usually optional entry specifies the chipset used on the graphics
board.
In most cases this entry is not required because the drivers will probe the
hardware to determine the chipset type.
Don't specify it unless the driver-specific documentation recommends that you
do.
.TP 7
.BI "Ramdac \*q" ramdac\-type \*q
This optional entry specifies the type of RAMDAC used on the graphics
board.
This is only used by a few of the drivers, and in most cases it is not
required because the drivers will probe the hardware to determine the
RAMDAC type where possible.
Don't specify it unless the driver-specific documentation recommends that you
do.
.TP 7
.BI "DacSpeed " speed
.TP 7
.BI "DacSpeed " "speed\-8 speed\-16 speed\-24 speed\-32"
This optional entry specifies the RAMDAC speed rating (which is usually
printed on the RAMDAC chip).
The speed is in MHz.
When one value is given, it applies to all framebuffer pixel sizes.
When multiple values are given, they apply to the framebuffer pixel sizes
8, 16, 24 and 32 respectively.
This is not used by many drivers, and only needs to be specified when the
speed rating of the RAMDAC is different from the defaults built in to
driver, or when the driver can't auto-detect the correct defaults.
Don't specify it unless the driver-specific documentation recommends that you
do.
.TP 7
.BI "Clocks " "clock ..."
specifies the pixel that are on your graphics board.
The clocks are in MHz, and may be specified as a floating point number.
The value is stored internally to the nearest kHz.
The ordering of the clocks is important.
It must match the order in which they are selected on the graphics board.
Multiple
.B Clocks
lines may be specified, and each is concatenated to form the list.
Most drivers do not use this entry, and it is only required for some older
boards with non-programmable clocks.
Don't specify this entry unless the driver-specific documentation explicitly
recommends that you do.
.TP
.BI "ClockChip \*q" clockchip\-type \*q
This optional entry is used to specify the clock chip type on graphics
boards which have a programmable clock generator.
Only a few Xorg drivers support programmable clock chips.
For details, see the appropriate driver manual page.
.TP 7
.BI "VideoRam " "mem"
This optional entry specifies the amount of video ram that is installed
on the graphics board.
This is measured in kBytes.
In most cases this is not required because the Xorg server probes
the graphics board to determine this quantity.
The driver-specific documentation should indicate when it might be needed.
.TP 7
.BI "BiosBase " "baseaddress"
This optional entry specifies the base address of the video BIOS for
the VGA board.
This address is normally auto-detected, and should only be specified if the
driver-specific documentation recommends it.
.TP 7
.BI "MemBase " "baseaddress"
This optional entry specifies the memory base address of a graphics
board's linear frame buffer.
This entry is not used by many drivers, and it should only be specified if
the driver-specific documentation recommends it.
.TP 7
.BI "IOBase " "baseaddress"
This optional entry specifies the IO base address.
This entry is not used by many drivers, and it should only be specified if
the driver-specific documentation recommends it.
.TP 7
.BI "ChipID " "id"
This optional entry specifies a numerical ID representing the chip type.
For PCI cards, it is usually the device ID.
This can be used to override the auto-detection, but that should only be done
when the driver-specific documentation recommends it.
.TP 7
.BI "ChipRev " "rev"
This optional entry specifies the chip revision number.
This can be used to override the auto-detection, but that should only be done
when the driver-specific documentation recommends it.
.TP 7
.BI "TextClockFreq " "freq"
This optional entry specifies the pixel clock frequency that is used
for the regular text mode.
The frequency is specified in MHz.
This is rarely used.
.TP 7
.BI "Option \*qModeDebug\*q \*q" boolean \*q
Enable printing of additional debugging information about modesetting to
the server log.
.ig
.TP 7
This optional entry allows an IRQ number to be specified.
..
.TP 7
.B Options
Option flags may be specified in the
.B Device
sections.
These include driver\-specific options and driver\-independent options.
The former are described in the driver\-specific documentation.
Some of the latter are described below in the section about the
.B Screen
section, and they may also be included here.
.SH "VIDEOADAPTOR SECTION"
Nobody wants to say how this works.
Maybe nobody knows ...
.SH "MONITOR SECTION"
The config file may have multiple
.B Monitor
sections.
There should normally be at least one, for the monitor being used,
but a default configuration will be created when one isn't specified.
.PP
.B Monitor
sections have the following format:
.PP
.RS 4
.nf
.B "Section \*qMonitor\*q"
.BI " Identifier \*q" name \*q
.I " entries"
.I " ..."
.B "EndSection"
.fi
.RE
.PP
The only mandatory entry in a
.B Monitor
section is the
.B Identifier
entry.
.PP
The
.B Identifier
entry specifies the unique name for this monitor.
The
.B Monitor
section may be used to provide information about the specifications of the
monitor, monitor-specific
.BR Options ,
and information about the video modes to use with the monitor.
.PP
With RandR 1.2-enabled drivers, monitor sections may be tied to specific
outputs of the video card. Using the name of the output defined by the video
driver plus the identifier of a monitor section, one associates a monitor
section with an output by adding an option to the Device section in the
following format:
.BI "Option \*qMonitor-" outputname "\*q \*q" monitorsection \*q
(for example,
.B Option \*qMonitor-VGA\*q \*qVGA monitor\*q
for a VGA output)
.PP
In the absence of specific association of monitor sections to outputs, if a
monitor section is present the server will associate it with an output to
preserve compatibility for previous single-head configurations.
.PP
Specifying video modes is optional because the server will use the DDC or other
information provided by the monitor to automatically configure the list of
modes available.
When modes are specified explicitly in the
.B Monitor
section (with the
.BR Mode ,
.BR ModeLine ,
or
.B UseModes
keywords), built-in modes with the same names are not included.
Built-in modes with different names are, however, still implicitly included,
when they meet the requirements of the monitor.
.PP
The entries that may be used in
.B Monitor
sections are described below.
.TP 7
.BI "VendorName \*q" vendor \*q
This optional entry specifies the monitor's manufacturer.
.TP 7
.BI "ModelName \*q" model \*q
This optional entry specifies the monitor's model.
.TP 7
.BI "HorizSync " "horizsync\-range"
gives the range(s) of horizontal sync frequencies supported by the
monitor.
.I horizsync\-range
may be a comma separated list of either discrete values or ranges of
values.
A range of values is two values separated by a dash.
By default the values are in units of kHz.
They may be specified in MHz or Hz
if
.B MHz
or
.B Hz
is added to the end of the line.
The data given here is used by the Xorg server to determine if video
modes are within the specifications of the monitor.
This information should be available in the monitor's handbook.
If this entry is omitted, a default range of 28\-33kHz is used.
.TP 7
.BI "VertRefresh " "vertrefresh\-range"
gives the range(s) of vertical refresh frequencies supported by the
monitor.
.I vertrefresh\-range
may be a comma separated list of either discrete values or ranges of
values.
A range of values is two values separated by a dash.
By default the values are in units of Hz.
They may be specified in MHz or kHz
if
.B MHz
or
.B kHz
is added to the end of the line.
The data given here is used by the Xorg server to determine if video
modes are within the specifications of the monitor.
This information should be available in the monitor's handbook.
If this entry is omitted, a default range of 43\-72Hz is used.
.TP 7
.BI "DisplaySize " "width height"
This optional entry gives the width and height, in millimetres, of the
picture area of the monitor.
If given this is used to calculate the horizontal and vertical pitch (DPI) of
the screen.
.TP 7
.BI "Gamma " "gamma\-value"
.TP 7
.BI "Gamma " "red\-gamma green\-gamma blue\-gamma"
This is an optional entry that can be used to specify the gamma correction
for the monitor.
It may be specified as either a single value or as three separate RGB values.
The values should be in the range 0.1 to 10.0, and the default is 1.0.
Not all drivers are capable of using this information.
.TP 7
.BI "UseModes \*q" modesection\-id \*q
Include the set of modes listed in the
.B Modes
section called
.IR modesection\-id.
This makes all of the modes defined in that section available for use by
this monitor.
.TP 7
.BI "Mode \*q" name \*q
This is an optional multi-line entry that can be used to provide
definitions for video modes for the monitor.
In most cases this isn't necessary because the built-in set of VESA standard
modes will be sufficient.
The
.B Mode
keyword indicates the start of a multi-line video mode description.
The mode description is terminated with the
.B EndMode
keyword.
The mode description consists of the following entries:
.RS 7
.TP 4
.BI "DotClock " clock
is the dot (pixel) clock rate to be used for the mode.
.TP 4
.BI "HTimings " "hdisp hsyncstart hsyncend htotal"
specifies the horizontal timings for the mode.
.TP 4
.BI "VTimings " "vdisp vsyncstart vsyncend vtotal"
specifies the vertical timings for the mode.
.TP 4
.BI "Flags \*q" flag \*q " ..."
specifies an optional set of mode flags, each of which is a separate
string in double quotes.
.B \*qInterlace\*q
indicates that the mode is interlaced.
.B \*qDoubleScan\*q
indicates a mode where each scanline is doubled.
.B \*q+HSync\*q
and
.B \*q\-HSync\*q
can be used to select the polarity of the HSync signal.
.B \*q+VSync\*q
and
.B \*q\-VSync\*q
can be used to select the polarity of the VSync signal.
.B \*qComposite\*q
can be used to specify composite sync on hardware where this is supported.
Additionally, on some hardware,
.B \*q+CSync\*q
and
.B \*q\-CSync\*q
may be used to select the composite sync polarity.
.TP 4
.BI "HSkew " hskew
specifies the number of pixels (towards the right edge of the screen) by
which the display enable signal is to be skewed.
Not all drivers use this information.
This option might become necessary to override the default value supplied
by the server (if any).
\(lqRoving\(rq horizontal lines indicate this value needs to be increased.
If the last few pixels on a scan line appear on the left of the screen,
this value should be decreased.
.TP 4
.BI "VScan " vscan
specifies the number of times each scanline is painted on the screen.
Not all drivers use this information.
Values less than 1 are treated as 1, which is the default.
Generally, the
.B \*qDoubleScan\*q
.B Flag
mentioned above doubles this value.
.RE
.TP 7
.BI "ModeLine \*q" name \*q " mode\-description"
This entry is a more compact version of the
.B Mode
entry, and it also can be used to specify video modes for the monitor.
This is a single line format for specifying video modes.
In most cases this isn't necessary because the built\-in set of VESA
standard modes will be sufficient.
.PP
.RS 7
The
.I mode\-description
is in four sections, the first three of which are mandatory.
The first is the dot (pixel) clock.
This is a single number specifying the pixel clock rate for the mode in
MHz.
The second section is a list of four numbers specifying the horizontal
timings.
These numbers are the
.IR hdisp ,
.IR hsyncstart ,
.IR hsyncend ,
and
.I htotal
values.
The third section is a list of four numbers specifying the vertical
timings.
These numbers are the
.IR vdisp ,
.IR vsyncstart ,
.IR vsyncend ,
and
.I vtotal
values.
The final section is a list of flags specifying other characteristics of
the mode.
.B Interlace
indicates that the mode is interlaced.
.B DoubleScan
indicates a mode where each scanline is doubled.
.B +HSync
and
.B \-HSync
can be used to select the polarity of the HSync signal.
.B +VSync
and
.B \-VSync
can be used to select the polarity of the VSync signal.
.B Composite
can be used to specify composite sync on hardware where this is supported.
Additionally, on some hardware,
.B +CSync
and
.B \-CSync
may be used to select the composite sync polarity.
The
.B HSkew
and
.B VScan
options mentioned above in the
.B Mode
entry description can also be used here.
.RE
.TP 7
.BI "Option \*qDPMS\*q \*q" bool \*q
This option controls whether the server should enable the DPMS extension
for power management for this screen. The default is to enable the
extension.
.TP 7
.BI "Option \*qSyncOnGreen\*q \*q" bool \*q
This option controls whether the video card should drive the sync signal
on the green color pin. Not all cards support this option, and most
monitors do not require it. The default is off.
.TP 7
.BI "Option \*qPrimary\*q \*q" bool \*q
This optional entry specifies that the monitor should be treated as the primary
monitor. (RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qPreferredMode\*q \*q" name \*q
This optional entry specifies a mode to be marked as the preferred initial mode
of the monitor.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qPosition\*q \*q" x " " y \*q
This optional entry specifies the position of the monitor within the X
screen.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qLeftOf\*q \*q" output \*q
This optional entry specifies that the monitor should be positioned to the
left of the output (not monitor) of the given name.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qRightOf\*q \*q" output \*q
This optional entry specifies that the monitor should be positioned to the
right of the output (not monitor) of the given name.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qAbove\*q \*q" output \*q
This optional entry specifies that the monitor should be positioned above the
output (not monitor) of the given name.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qBelow\*q \*q" output \*q
This optional entry specifies that the monitor should be positioned below the
output (not monitor) of the given name.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qEnable\*q \*q" bool \*q
This optional entry specifies whether the monitor should be turned on
at startup. By default, the server will attempt to enable all connected
monitors.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qDefaultModes\*q \*q" bool \*q
This optional entry specifies whether the server should add supported default
modes to the list of modes offered on this monitor. By default, the server
will add default modes; you should only disable this if you can guarantee
that EDID will be available at all times, or if you have added custom modelines
which the server can use.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qMinClock\*q \*q" frequency \*q
This optional entry specifies the minimum dot clock, in kHz, that is supported
by the monitor.
.TP 7
.BI "Option \*qMaxClock\*q \*q" frequency \*q
This optional entry specifies the maximum dot clock, in kHz, that is supported
by the monitor.
.TP 7
.BI "Option \*qIgnore\*q \*q" bool \*q
This optional entry specifies that the monitor should be ignored entirely,
and not reported through RandR. This is useful if the hardware reports the
presence of outputs that don't exist.
(RandR 1.2-supporting drivers only)
.TP 7
.BI "Option \*qRotate\*q \*q" rotation \*q
This optional entry specifies the initial rotation of the given monitor.
Valid values for rotation are \*qnormal\*q, \*qleft\*q, \*qright\*q, and
\*qinverted\*q.
(RandR 1.2-supporting drivers only)
.SH "MODES SECTION"
The config file may have multiple
.B Modes
sections, or none.
These sections provide a way of defining sets of video modes independently
of the
.B Monitor
sections.
.B Monitor
sections may include the definitions provided in these sections by
using the
.B UseModes
keyword.
In most cases the
.B Modes
sections are not necessary because the built\-in set of VESA standard modes
will be sufficient.
.PP
.B Modes
sections have the following format:
.PP
.RS 4
.nf
.B "Section \*qModes\*q"
.BI " Identifier \*q" name \*q
.I " entries"
.I " ..."
.B "EndSection"
.fi
.RE
.PP
The
.B Identifier
entry specifies the unique name for this set of mode descriptions.
The other entries permitted in
.B Modes
sections are the
.B Mode
and
.B ModeLine
entries that are described above in the
.B Monitor
section.
.SH "SCREEN SECTION"
The config file may have multiple
.B Screen
sections.
There must be at least one, for the \(lqscreen\(rq being used.
A \(lqscreen\(rq represents the binding of a graphics device
.RB ( Device
section) and a monitor
.RB ( Monitor
section).
A
.B Screen
section is considered \(lqactive\(rq if it is referenced by an active
.B ServerLayout
section or by the
.B \-screen
command line option.
If neither of those is present, the first
.B Screen
section found in the config file is considered the active one.
.PP
.B Screen
sections have the following format:
.PP
.RS 4
.nf
.B "Section \*qScreen\*q"
.BI " Identifier \*q" name \*q
.BI " Device \*q" devid \*q
.BI " Monitor \*q" monid \*q
.I " entries"
.I " ..."
.BI " SubSection \*qDisplay\*q"
.I " entries"
.I " ...
.B " EndSubSection"
.I " ..."
.B "EndSection"
.fi
.RE
.PP
The
.B Identifier
entry is mandatory.
All others are optional.
.PP
The
.B Identifier
entry specifies the unique name for this screen.
The
.B Screen
section provides information specific to the whole screen, including
screen\-specific
.BR Options .
In multi\-head configurations, there will be multiple active
.B Screen
sections, one for each head.
The entries available
for this section are:
.TP 7
.BI "Device \*q" device\-id \*q
This entry specifies the
.B Device
section to be used for this screen. When multiple graphics cards are
present, this is what ties a specific card to a screen. The
.I device\-id
must match the
.B Identifier
of a
.B Device
section in the config file.
.TP 7
.BI "Monitor \*q" monitor\-id \*q
specifies which monitor description is to be used for this screen.
If a
.B Monitor
name is not specified, a default configuration is used.
Currently the default configuration may not function as expected on all
platforms.
.TP 7
.BI "VideoAdaptor \*q" xv\-id \*q
specifies an optional Xv video adaptor description to be used with this
screen.
.TP 7
.BI "DefaultDepth " depth
specifies which color depth the server should use by default.
The
.B \-depth
command line option can be used to override this.
If neither is specified, the default depth is driver\-specific, but in most
cases is 8.
.TP 7
.BI "DefaultFbBpp " bpp
specifies which framebuffer layout to use by default.
The
.B \-fbbpp
command line option can be used to override this.
In most cases the driver will chose the best default value for this.
The only case where there is even a choice in this value is for depth 24,
where some hardware supports both a packed 24 bit framebuffer layout and a
sparse 32 bit framebuffer layout.
.TP 7
.B Options
Various
.B Option
flags may be specified in the
.B Screen
section.
Some are driver\-specific and are described in the driver documentation.
Others are driver\-independent, and will eventually be described here.
.\" XXX These should really be in an xaa man page.
.TP 7
.BI "Option \*qAccel\*q"
Enables 2D hardware acceleration.
This option is on by default, but it may be necessary to turn it off if
there are bugs in the driver.
There are many options to disable specific accelerated operations, listed
below.
Note that disabling an operation will have no effect if the operation is
not accelerated (whether due to lack of support in the hardware or in the
driver).
.TP 7
.BI "Option \*qInitPrimary\*q \*q" boolean \*q
Use the Int10 module to initialize the primary graphics card.
Normally, only secondary cards are soft-booted using the Int10 module, as the
primary card has already been initialized by the BIOS at boot time.
Default: false.
.TP 7
.BI "Option \*qNoInt10\*q \*q" boolean \*q
Disables the Int10 module, a module that uses the int10 call to the BIOS
of the graphics card to initialize it.
Default: false.
.TP 7
.BI "Option \*qNoMTRR\*q"
Disables MTRR (Memory Type Range Register) support, a feature of modern
processors which can improve video performance by a factor of up to 2.5.
Some hardware has buggy MTRR support, and some video drivers have been
known to exhibit problems when MTRR's are used.
.PP
Each
.B Screen
section may optionally contain one or more
.B Display
subsections.
Those subsections provide depth/fbbpp specific configuration information,
and the one chosen depends on the depth and/or fbbpp that is being used for
the screen.
The
.B Display
subsection format is described in the section below.
.SH "DISPLAY SUBSECTION"
Each
.B Screen
section may have multiple
.B Display
subsections.
The \(lqactive\(rq
.B Display
subsection is the first that matches the depth and/or fbbpp values being
used, or failing that, the first that has neither a depth or fbbpp value
specified.
The
.B Display
subsections are optional.
When there isn't one that matches the depth and/or fbbpp values being used,
all the parameters that can be specified here fall back to their defaults.
.PP
.B Display
subsections have the following format:
.PP
.RS 4
.nf
.B " SubSection \*qDisplay\*q"
.BI " Depth " depth
.I " entries"
.I " ..."
.B " EndSubSection"
.fi
.RE
.TP 7
.BI "Depth " depth
This entry specifies what colour depth the
.B Display
subsection is to be used for.
This entry is usually specified, but it may be omitted to create a match\-all
.B Display
subsection or when wishing to match only against the
.B FbBpp
parameter.
The range of
.I depth
values that are allowed depends on the driver.
Most drivers support 8, 15, 16 and 24.
Some also support 1 and/or 4, and some may support other values (like 30).
Note:
.I depth
means the number of bits in a pixel that are actually used to determine
the pixel colour.
32 is not a valid
.I depth
value.
Most hardware that uses 32 bits per pixel only uses 24 of them to hold the
colour information, which means that the colour depth is 24, not 32.
.TP 7
.BI "FbBpp " bpp
This entry specifies the framebuffer format this
.B Display
subsection is to be used for.
This entry is only needed when providing depth 24 configurations that allow
a choice between a 24 bpp packed framebuffer format and a 32bpp sparse
framebuffer format.
In most cases this entry should not be used.
.TP 7
.BI "Weight " "red\-weight green\-weight blue\-weight"
This optional entry specifies the relative RGB weighting to be used
for a screen is being used at depth 16 for drivers that allow multiple
formats.
This may also be specified from the command line with the
.B \-weight
option (see
.BR Xorg(__appmansuffix__)).
.TP 7
.BI "Virtual " "xdim ydim"
This optional entry specifies the virtual screen resolution to be used.
.I xdim
must be a multiple of either 8 or 16 for most drivers, and a multiple
of 32 when running in monochrome mode.
The given value will be rounded down if this is not the case.
Video modes which are too large for the specified virtual size will be
rejected.
If this entry is not present, the virtual screen resolution will be set to
accommodate all the valid video modes given in the
.B Modes
entry.
Some drivers/hardware combinations do not support virtual screens.
Refer to the appropriate driver\-specific documentation for details.
.TP 7
.BI "ViewPort " "x0 y0"
This optional entry sets the upper left corner of the initial display.
This is only relevant when the virtual screen resolution is different
from the resolution of the initial video mode.
If this entry is not given, then the initial display will be centered in
the virtual display area.
.TP 7
.BI "Modes \*q" mode\-name \*q " ..."
This optional entry specifies the list of video modes to use.
Each
.I mode\-name
specified must be in double quotes.
They must correspond to those specified or referenced in the appropriate
.B Monitor
section (including implicitly referenced built\-in VESA standard modes).
The server will delete modes from this list which don't satisfy various
requirements.
The first valid mode in this list will be the default display mode for
startup.
The list of valid modes is converted internally into a circular list.
It is possible to switch to the next mode with
.B Ctrl+Alt+Keypad\-Plus
and to the previous mode with
.BR Ctrl+Alt+Keypad\-Minus .
When this entry is omitted, the valid modes referenced by the appropriate
.B Monitor
section will be used. If the
.B Monitor
section contains no modes, then the selection will be taken from the
built-in VESA standard modes.
.TP 7
.BI "Visual \*q" visual\-name \*q
This optional entry sets the default root visual type.
This may also be specified from the command line (see the
.BR Xserver(__appmansuffix__)
man page).
The visual types available for depth 8 are (default is
.BR PseudoColor ):
.PP
.RS 11
.nf
.B StaticGray
.B GrayScale
.B StaticColor
.B PseudoColor
.B TrueColor
.B DirectColor
.fi
.RE
.PP
.RS 7
The visual type available for the depths 15, 16 and 24 are (default is
.BR TrueColor ):
.PP
.RS 4
.nf
.B TrueColor
.B DirectColor
.fi
.RE
.PP
Not all drivers support
.B DirectColor
at these depths.
.PP
The visual types available for the depth 4 are (default is
.BR StaticColor ):
.PP
.RS 4
.nf
.B StaticGray
.B GrayScale
.B StaticColor
.B PseudoColor
.fi
.RE
.PP
The visual type available for the depth 1 (monochrome) is
.BR StaticGray .
.RE
.TP 7
.BI "Black " "red green blue"
This optional entry allows the \(lqblack\(rq colour to be specified.
This is only supported at depth 1.
The default is black.
.TP 7
.BI "White " "red green blue"
This optional entry allows the \(lqwhite\(rq colour to be specified.
This is only supported at depth 1.
The default is white.
.TP 7
.B Options
Option flags may be specified in the
.B Display
subsections.
These may include driver\-specific options and driver\-independent options.
The former are described in the driver\-specific documentation.
Some of the latter are described above in the section about the
.B Screen
section, and they may also be included here.
.SH "SERVERLAYOUT SECTION"
The config file may have multiple
.B ServerLayout
sections.
A \(lqserver layout\(rq represents the binding of one or more screens
.RB ( Screen
sections) and one or more input devices
.RB ( InputDevice
sections) to form a complete configuration.
In multi\-head configurations, it also specifies the relative layout of the
heads.
A
.B ServerLayout
section is considered \(lqactive\(rq if it is referenced by the
.B \-layout
command line option or by an
.B "Option \*qDefaultServerLayout\*q"
entry in the
.B ServerFlags
section (the former takes precedence over the latter).
If those options are not used, the first
.B ServerLayout
section found in the config file is considered the active one.
If no
.B ServerLayout
sections are present, the single active screen and two active (core)
input devices are selected as described in the relevant sections above.
.PP
.B ServerLayout
sections have the following format:
.PP
.RS 4
.nf
.B "Section \*qServerLayout\*q"
.BI " Identifier \*q" name \*q
.BI " Screen \*q" screen\-id \*q
.I " ..."
.BI " InputDevice \*q" idev\-id \*q
.I " ..."
.I " options"
.I " ..."
.B "EndSection"
.fi
.RE
.PP
Each
.B ServerLayout
section must have an
.B Identifier
entry and at least one
.B Screen
entry.
.PP
The
.B Identifier
entry specifies the unique name for this server layout.
The
.B ServerLayout
section provides information specific to the whole session, including
session\-specific
.BR Options .
The
.B ServerFlags
options (described above) may be specified here, and ones given here
override those given in the
.B ServerFlags
section.
.PP
The entries that may be used in this section are described here.
.TP 7
.BI "Screen " "screen\-num" " \*qscreen\-id\*q " "position\-information"
One of these entries must be given for each screen being used in
a session.
The
.I screen\-id
field is mandatory, and specifies the
.B Screen
section being referenced.
The
.I screen\-num
field is optional, and may be used to specify the screen number
in multi\-head configurations.
When this field is omitted, the screens will be numbered in the order that
they are listed in.
The numbering starts from 0, and must be consecutive.
The
.I position\-information
field describes the way multiple screens are positioned.
There are a number of different ways that this information can be provided:
.RS 7
.TP 4
.I "x y"
.TP 4
.BI "Absolute " "x y"
These both specify that the upper left corner's coordinates are
.RI ( x , y ).
The
.B Absolute
keyword is optional.
Some older versions of XFree86 (4.2 and earlier) don't recognise the
.B Absolute
keyword, so it's safest to just specify the coordinates without it.
.TP 4
.BI "RightOf \*q" screen\-id \*q
.TP 4
.BI "LeftOf \*q" screen\-id \*q
.TP 4
.BI "Above \*q" screen\-id \*q
.TP 4
.BI "Below \*q" screen\-id \*q
.TP 4
.BI "Relative \*q" screen\-id \*q " x y"
These give the screen's location relative to another screen.
The first four position the screen immediately to the right, left, above or
below the other screen.
When positioning to the right or left, the top edges are aligned.
When positioning above or below, the left edges are aligned.
The
.B Relative
form specifies the offset of the screen's origin (upper left corner)
relative to the origin of another screen.
.RE
.TP 7
.BI "InputDevice \*q" idev\-id "\*q \*q" option \*q " ..."
One of these entries should be given for each input device being used in
a session.
Normally at least two are required, one each for the core pointer and
keyboard devices.
If either of those is missing, suitable
.B InputDevice
entries are searched for using the method described above in the
.B INPUTDEVICE
section. The
.I idev\-id
field is mandatory, and specifies the name of the
.B InputDevice
section being referenced.
Multiple
.I option
fields may be specified, each in double quotes.
The options permitted here are any that may also be given in the
.B InputDevice
sections.
Normally only session\-specific input device options would be used here.
The most commonly used options are:
.PP
.RS 11
.nf
.B \*qCorePointer\*q
.B \*qCoreKeyboard\*q
.B \*qSendCoreEvents\*q
.fi
.RE
.PP
.RS 7
and the first two should normally be used to indicate the core pointer
and core keyboard devices respectively.
.RE
.TP 7
.B Options
In addition to the following, any option permitted in the
.B ServerFlags
section may also be specified here.
When the same option appears in both places, the value given here overrides
the one given in the
.B ServerFlags
section.
.TP 7
.BI "Option \*qIsolateDevice\*q \*q" bus\-id \*q
Restrict device resets to the specified
.IR bus\-id .
See the
.B BusID
option (described in
.BR "DEVICE SECTION" ,
above) for the format of the
.I bus\-id
parameter.
This option overrides
.BR SingleCard ,
if specified.
At present, only PCI devices can be isolated in this manner.
.TP 7
.BI "Option \*qSingleCard\*q \*q" boolean \*q
As
.BR IsolateDevice ,
except that the bus ID of the first device in the layout is used.
.PP
Here is an example of a
.B ServerLayout
section for a dual headed configuration with two mice:
.PP
.RS 4
.nf
.B "Section \*qServerLayout\*q"
.B " Identifier \*qLayout 1\*q"
.B " Screen \*qMGA 1\*q"
.B " Screen \*qMGA 2\*q RightOf \*qMGA 1\*q"
.B " InputDevice \*qKeyboard 1\*q \*qCoreKeyboard\*q"
.B " InputDevice \*qMouse 1\*q \*qCorePointer\*q"
.B " InputDevice \*qMouse 2\*q \*qSendCoreEvents\*q"
.B " Option \*qBlankTime\*q \*q5\*q"
.B "EndSection"
.fi
.RE
.SH "DRI SECTION"
This optional section is used to provide some information for the
Direct Rendering Infrastructure.
Details about the format of this section can be found on-line at
.IR <http://dri.freedesktop.org/> .
.SH "VENDOR SECTION"
The optional
.B Vendor
section may be used to provide vendor\-specific configuration information.
Multiple
.B Vendor
sections may be present, and they may contain an
.B Identifier
entry and multiple
.B Option
flags.
The data therein is not used in this release.
.PP
.SH "SEE ALSO"
General:
.BR X (__miscmansuffix__),
.BR Xserver (__appmansuffix__),
.BR Xorg (__appmansuffix__),
.BR cvt (__appmansuffix__),
.BR gtf (__appmansuffix__).
.PP
.B "Not all modules or interfaces are available on all platforms."
.PP
Display drivers:
.BR apm (__drivermansuffix__),
.BR ati (__drivermansuffix__),
.BR chips (__drivermansuffix__),
.BR cirrus (__drivermansuffix__),
.BR cyrix (__drivermansuffix__),
.BR fbdev (__drivermansuffix__),
.BR glide (__drivermansuffix__),
.BR glint (__drivermansuffix__),
.BR i128 (__drivermansuffix__),
.BR i740 (__drivermansuffix__),
.BR imstt (__drivermansuffix__),
.BR intel (__drivermansuffix__),
.BR mga (__drivermansuffix__),
.BR neomagic (__drivermansuffix__),
.BR nv (__drivermansuffix__),
.BR openchrome (__drivermansuffix__),
.BR r128 (__drivermansuffix__),
.BR radeon (__drivermansuffix__),
.BR rendition (__drivermansuffix__),
.BR savage (__drivermansuffix__),
.BR s3virge (__drivermansuffix__),
.BR siliconmotion (__drivermansuffix__),
.BR sis (__drivermansuffix__),
.BR sisusb (__drivermansuffix__),
.BR sunbw2 (__drivermansuffix__),
.BR suncg14 (__drivermansuffix__),
.BR suncg3 (__drivermansuffix__),
.BR suncg6 (__drivermansuffix__),
.BR sunffb (__drivermansuffix__),
.BR sunleo (__drivermansuffix__),
.BR suntcx (__drivermansuffix__),
.BR tdfx (__drivermansuffix__),
.\" .BR tga (__drivermansuffix__),
.BR trident (__drivermansuffix__),
.BR tseng (__drivermansuffix__),
.BR vesa (__drivermansuffix__),
.BR vmware (__drivermansuffix__),
.BR voodoo (__drivermansuffix__),
.BR wsfb (__drivermansuffix__),
.BR xgi (__drivermansuffix__),
.BR xgixp (__drivermansuffix__).
.PP
Input drivers:
.BR acecad (__drivermansuffix__),
.BR citron (__drivermansuffix__),
.BR elographics (__drivermansuffix__),
.BR evdev (__drivermansuffix__),
.BR fpit (__drivermansuffix__),
.BR joystick (__drivermansuffix__),
.BR kbd (__drivermansuffix__),
.BR mousedrv (__drivermansuffix__),
.BR mutouch (__drivermansuffix__),
.BR penmount (__drivermansuffix__),
.BR synaptics (__drivermansuffix__),
.BR vmmouse (__drivermansuffix__),
.BR void (__drivermansuffix__),
.BR wacom (__drivermansuffix__).
.PP
Other modules and interfaces:
.BR exa (__drivermansuffix__),
.BR fbdevhw (__drivermansuffix__),
.\" .BR shadowfb (__drivermansuffix__),
.BR v4l (__drivermansuffix__).
.br
.SH AUTHORS
This manual page was largely rewritten by David Dawes
.IR <dawes@xfree86.org> .
|