Index: /trunk/src/VBox/Additions/x11/VBoxClient/display-svga-x11.cpp
===================================================================
--- /trunk/src/VBox/Additions/x11/VBoxClient/display-svga-x11.cpp	(revision 84218)
+++ /trunk/src/VBox/Additions/x11/VBoxClient/display-svga-x11.cpp	(revision 84219)
@@ -1134,5 +1134,5 @@
         x11Context.pScreenResources = x11Context.pXRRGetScreenResources(x11Context.pDisplay, x11Context.rootWindow);
 #endif
-    x11Context.hOutputCount = determineOutputCount();
+    x11Context.hOutputCount = x11Context.fWmwareCtrlExtention ? determineOutputCount() : 1;
 
     if (!x11Context.pScreenResources)