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

[Keith Packard]

On Fri, 2007-10-12 at 20:27 +0100, Peter Clifton wrote:

> Incidentally, I note there are no posting reads in the hardware restore
> path. I have a patch which adds these for the various regs which are
> posted elsewhere in the driver. It didn't help fix any of the crashes,
> so I dropped it from the patch I was playing with for Ubuntu.

As far as we know, posting reads are not currently necessary for any of
our graphics controllers, but we've been adding them to mark where they
would need to go, in case some future chip does need them.

-- 
keith.packard at intel.com
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