* Re: 2.4.18 VIA MWQ patch (Athlon stomper) corrupts video wi
@ 2002-03-20 18:51 Petr Vandrovec
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From: Petr Vandrovec @ 2002-03-20 18:51 UTC (permalink / raw)
To: Steven Walter; +Cc: linux-kernel
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
vandrove@vc.cvut.cz
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2002-03-20 18:51 2.4.18 VIA MWQ patch (Athlon stomper) corrupts video wi Petr Vandrovec
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