TwinView Issues for v6.31:

1. When "Video Mirror Control"->"Full Screen Device" is "Disabled" in
   Clone mode, overlay cannot be activated and DVD players are also unable
   to play Macrovision DVDs.

2. When entering DOS full screen in Extended/Clone modes, the 2nd display
   device will black out.

3. When changing the resolution of the 1st display device, if the 2nd
   display device is TV, the TV will black out.

4. Quake II is unable to start in Extended mode.

5. With AGP-V7100 Deluxe Combo, when the 1st display device is "VGA"
   (a CRT monitor), if users want to change the 2nd display device to
   "VGA" also, the operation will fail because there is no RAMDAC for the
   2nd CRT monitor.