Index: /trunk/src/VBox/Frontends/VirtualBox/src/VBoxVMSettingsDisplay.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/VBoxVMSettingsDisplay.cpp	(revision 20084)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/VBoxVMSettingsDisplay.cpp	(revision 20085)
@@ -102,4 +102,7 @@
 
     /* 3D Acceleration */
+    bool isAccelerationSupported = vboxGlobal().virtualBox().GetHost()
+                                   .GetAcceleration3DAvailable();
+    mCb3D->setEnabled (isAccelerationSupported);
     mCb3D->setChecked (mMachine.GetAccelerate3DEnabled());