915gm/945gm/XAA lockup with gray blocks when switching video mode

[Jesse Barnes]

On Wednesday, October 10, 2007, Bryce Harrington wrote:
> Commenting out this loop seems to resolve the issue.
> What is this loop for, and what do we risk by not having it?

The loop is needed for modes where we use the pallet.  But this might be 
a timing issue.  Can you try replacing the two pallet restore loops 
with delay loops of various kinds?  That would indicate whether the 
time it takes to restore the pallet is exposing a bug elsewhere.  
Alternately, you could add some small delays to the pallet restoration 
itself in the unlikely event that the pallet registers don't like to be 
written too quickly.

Jesse