2002-03-20 18:55:00

by Petr Vandrovec

[permalink] [raw]
Subject: Re: 2.4.18 VIA MWQ patch (Athlon stomper) corrupts video wi

On 20 Mar 02 at 12:45, Steven Walter wrote:
> I have this problem, as well. The fix for me was simply not to perform
> the fixup at all. I'm not sure if clearing only bit 7 fixes the problem
> on my machine, but would grudgingly try it, if wanted. (I don't have
> particularly ready access to the machine.)

You should find 'Disabling VIA memory write queue: [xx] aa->bb'
in your output. Values 'aa' and 'bb' are important - in other examples
it modifies value from 0x3x to 0x1x. Unfortunately I could not find
any hints whether we should clear bits 6,5 only on VIA_8363_0 if
revision is < 0x80, or whether we should not touch them at all.

In all reports from last september I remember that clearing bit 7 alone
fixed problems, but then patch which clears all three bits appeared
from VIA without real world examples which were affected by it...
Petr Vandrovec
[email protected]