Index: /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsDisplay.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsDisplay.cpp	(revision 82709)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsDisplay.cpp	(revision 82710)
@@ -875,4 +875,9 @@
     /* Update Video RAM requirements: */
     m_pVideoMemoryEditor->setGraphicsControllerType(m_pGraphicsControllerEditor->value());
+#ifdef VBOX_WITH_VIDEOHWACCEL
+    m_pLayout2DVideo->setCurrentWidget(  graphicsControllerTypeCurrent() == KGraphicsControllerType_VBoxVGA
+                                       ? m_pCheckbox2DVideo
+                                       : m_pPlaceholder2DVideo);
+#endif
 
     /* Revalidate: */
Index: /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsDisplay.ui
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsDisplay.ui	(revision 82709)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsDisplay.ui	(revision 82710)
@@ -159,34 +159,48 @@
           </item>
           <item row="7" column="1">
-           <widget class="QCheckBox" name="m_pCheckbox3D">
-            <property name="sizePolicy">
-             <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
-              <horstretch>0</horstretch>
-              <verstretch>0</verstretch>
-             </sizepolicy>
-            </property>
-            <property name="whatsThis">
-             <string>When checked, the virtual machine will be given access to the 3D graphics capabilities available on the host.</string>
-            </property>
-            <property name="text">
-             <string>Enable &amp;3D Acceleration</string>
-            </property>
-           </widget>
+           <layout class="QStackedLayout" name="m_pLayout3D">
+            <item>
+             <widget class="QCheckBox" name="m_pCheckbox3D">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="whatsThis">
+               <string>When checked, the virtual machine will be given access to the 3D graphics capabilities available on the host.</string>
+              </property>
+              <property name="text">
+               <string>Enable &amp;3D Acceleration</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QWidget" name="m_pPlaceholder3D"/>
+            </item>
+           </layout>
           </item>
           <item row="8" column="1">
-           <widget class="QCheckBox" name="m_pCheckbox2DVideo">
-            <property name="sizePolicy">
-             <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
-              <horstretch>0</horstretch>
-              <verstretch>0</verstretch>
-             </sizepolicy>
-            </property>
-            <property name="whatsThis">
-             <string>When checked, the virtual machine will be given access to the Video Acceleration capabilities available on the host.</string>
-            </property>
-            <property name="text">
-             <string>Enable &amp;2D Video Acceleration</string>
-            </property>
-           </widget>
+           <layout class="QStackedLayout" name="m_pLayout2DVideo">
+            <item>
+             <widget class="QCheckBox" name="m_pCheckbox2DVideo">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="whatsThis">
+               <string>When checked, the virtual machine will be given access to the Video Acceleration capabilities available on the host.</string>
+              </property>
+              <property name="text">
+               <string>Enable &amp;2D Video Acceleration</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QWidget" name="m_pPlaceholder2DVideo"/>
+            </item>
+           </layout>
           </item>
          </layout>