3 files changed, 11 insertions, 2 deletions
diff --git a/xorg-server/hw/xfree86/common/xf86Bus.c b/xorg-server/hw/xfree86/common/xf86Bus.c
index 6de8409fc..4ffbf7e46 100644
--- a/xorg-server/hw/xfree86/common/xf86Bus.c
+++ b/xorg-server/hw/xfree86/common/xf86Bus.c
@@ -81,6 +81,8 @@ xf86CallDriverProbe(DriverPtr drv, Bool detect_only)
     if (drv->platformProbe != NULL) {
         foundScreen = xf86platformProbeDev(drv);
     }
+    if (ServerIsNotSeat0())
+        return foundScreen;
 #endif
 
 #ifdef XSERVER_LIBPCIACCESS
@@ -214,6 +216,8 @@ xf86BusProbe(void)
 {
 #ifdef XSERVER_PLATFORM_BUS
     xf86platformProbe();
+    if (ServerIsNotSeat0())
+        return;
 #endif
 #ifdef XSERVER_LIBPCIACCESS
     xf86PciProbe();
diff --git a/xorg-server/hw/xfree86/common/xf86platformBus.c b/xorg-server/hw/xfree86/common/xf86platformBus.c
index 24b947326..0525e39bc 100644
--- a/xorg-server/hw/xfree86/common/xf86platformBus.c
+++ b/xorg-server/hw/xfree86/common/xf86platformBus.c
@@ -213,11 +213,12 @@ xf86platformProbe(void)
     int i;
     Bool pci = TRUE;
 
+    config_odev_probe(xf86PlatformDeviceProbe);
+
     if (!xf86scanpci()) {
         pci = FALSE;
     }
 
-    config_odev_probe(&xf86PlatformDeviceProbe);
     for (i = 0; i < xf86_num_platform_devices; i++) {
         char *busid = xf86_get_platform_attrib(i, ODEV_ATTRIB_BUSID);
 
@@ -358,6 +359,9 @@ xf86platformProbeDev(DriverPtr drvp)
                     break;
             }
             else {
+                /* for non-seat0 servers assume first device is the master */
+                if (ServerIsNotSeat0())
+                    break;
                 if (xf86_platform_devices[j].pdev) {
                     if (xf86IsPrimaryPlatform(&xf86_platform_devices[j]))
                         break;
diff --git a/xorg-server/hw/xfree86/modes/xf86Crtc.c b/xorg-server/hw/xfree86/modes/xf86Crtc.c
index e3eaf5f4c..177f7ac11 100644
--- a/xorg-server/hw/xfree86/modes/xf86Crtc.c
+++ b/xorg-server/hw/xfree86/modes/xf86Crtc.c
@@ -66,6 +66,7 @@ xf86CrtcConfigInit(ScrnInfoPtr scrn, const xf86CrtcConfigFuncsRec * funcs)
     config = xnfcalloc(1, sizeof(xf86CrtcConfigRec));
 
     config->funcs = funcs;
+    config->compat_output = -1;
 
     scrn->privates[xf86CrtcConfigPrivateIndex].ptr = config;
 }
@@ -1841,7 +1842,7 @@ SetCompatOutput(xf86CrtcConfigPtr config)
     if (compat >= 0) {
         config->compat_output = compat;
     }
-    else {
+    else if (config->compat_output >= 0 && config->compat_output < config->num_output) {
         /* Don't change the compat output when no valid outputs found */
         output = config->output[config->compat_output];
     }