OSVIWDCS - WIN-OS/2 WINDOW SESSION IN SVGA LOCKS UP SYSTEM WITH
           WD90C33 VIDEO CHIP SET
05/09/96

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         WIN-OS/2 Window Session in SVGA Locks Up System with
                       WD90C33 Video Chip Set
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Please Read Entire Document for Full Explanation of Procedure
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DESCRIPTION

When a WIN-OS/2 Window session in SVGA is opened on a system that has 
the Western Digital 90C33 video chip set, the system locks up. The 
system cannot be restarted with Ctrl+Alt+Del; it must be turned off and
then turned back on. In addition, a memory dump cannot be made.

Note: The problem could not be re-created with any of the Western
      Digital 90C33 video adapters supported by OS/2 Warp, but was
      re-created with many OEM adapters that had the WD90C33 chip
      set. These adapters apparently cannot handle the accelerated
      drivers under OS/2 Warp. The problem also was seen in Gateway
      2000 systems that have the WD90C33 Rocket video adapter.


RESOLUTION

1. Using Selective Install, reset video to VGA.

   Note: You also can press Alt+F1 and then V.

2. In Selective Install, click on Primary Display; then select Western
   Digital 90C11, C30, C31 (C30 mode only).

3. Select OK and then OK again.

4. Select Default when prompted to choose Monitor Utility or Default.

5. When prompted to select a resolution, select one with 1 MB of video
   memory.

6. Complete the installation; then shut down and restart the system.

The WIN-OS/2 sessions now will work.

Note: The use of these drivers might result in a slower video
      repaint.

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