Index: /trunk/src/VBox/Devices/VMMDev/VMMDev.cpp
===================================================================
--- /trunk/src/VBox/Devices/VMMDev/VMMDev.cpp	(revision 82674)
+++ /trunk/src/VBox/Devices/VMMDev/VMMDev.cpp	(revision 82675)
@@ -4272,5 +4272,6 @@
     {
         DISPLAYCHANGEREQUEST *pRequest = &pThis->displayChangeData.aRequests[i];
-        memset (&pRequest->lastReadDisplayChangeRequest, 0, sizeof (pRequest->lastReadDisplayChangeRequest));
+        memset(&pRequest->lastReadDisplayChangeRequest, 0, sizeof(pRequest->lastReadDisplayChangeRequest));
+        pRequest->lastReadDisplayChangeRequest.fDisplayFlags = VMMDEV_DISPLAY_DISABLED;
     }
     pThis->displayChangeData.iCurrentMonitor = 0;
@@ -4457,4 +4458,13 @@
     vmmdevAllocFacilityStatusEntry(pThis, VBoxGuestFacilityType_Graphics,        true /*fFixed*/, &TimeStampNow);
     Assert(pThis->cFacilityStatuses == 5);
+
+    /* disable all screens (no better hints known yet). */
+    /** @todo r=klaus need a way to represent "no hint known" */
+    for (unsigned i = 0; i < RT_ELEMENTS(pThis->displayChangeData.aRequests); i++)
+    {
+        DISPLAYCHANGEREQUEST *pRequest = &pThis->displayChangeData.aRequests[i];
+        pRequest->displayChangeRequest.fDisplayFlags = VMMDEV_DISPLAY_DISABLED;
+        pRequest->lastReadDisplayChangeRequest.fDisplayFlags = VMMDEV_DISPLAY_DISABLED;
+    }
 
     /*
@@ -4919,4 +4929,3 @@
 };
 
-#endif /* !VBOX_DEV1679
-ICE_STRUCT_TESTCASE */
+#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */