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SubjectRe: Screen corruption in 2.4.18
On 29 Mar 02 at 13:05, Andre Pang wrote:
> On Fri, Mar 29, 2002 at 01:14:47AM +0100, Danijel Schiavuzzi wrote:
>
> > > 00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev
> > > 81) 00:01.0
> >
> > It's interesting that everyone who is experiencing these problems has the
> > *revision 81* of the VT8365 chipset! This should be the key...
>
> You know, we might be barking down the wrong tree. (Arf.)

From my findings revision 81 is KL133/KL133A (and only KL133 is affected
by clearing bit 5 in 0x55, KL133A works fine in both configs). KM133/KM133A
have revision 84, and KM133 is affected (I have no idea about KM133A).

> So far, everybody who has reported video corruption seems to have
> a Savage or ProSavage video card. Maybe it'd be a better idea to

Because of they are integrated with K[LM]133...

> look at the ProSavage data sheets and see if we should be
> tweaking something there? That would be much safer than playing
> around with the northbridges.

As now we have also report (from G550 user) that PCI -> AGP transfers
are broken when bit 5 is cleared, I think that playing dangerous games
with northbridge is only way to go.
Petr Vandrovec
vandrove@vc.cvut.cz

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