Messages in this thread | | | Date | Sun, 24 Mar 2002 18:05:16 +1100 | From | Andre Pang <> | Subject | Re: Screen corruption in 2.4.18 |
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On Sat, Mar 23, 2002 at 10:06:47AM -0600, Steven Walter wrote:
> > Don't get it wrong. I *do have* an VT8365. VT8365 (ProSavage KM133) is > > somewhat the same as VT8363 (KT133), except that 8365 has an integrated > > Savage graphics card (which *I use*). > > Aha... I see. And in thinking about it, I realize that my motherboard > also has this integrated graphics card. Perhaps this is the difference? > Unfortunately, it seems they both report the same PCI id, so I don't > really know of a way to differentiate them.
I can verify Danijel's report -- I have the same setup (VT8363+VT8353, a.k.a. ProSavage KM133), and I experience the same screen corruption. Clearing only bit 7 of register 55 fixes the problem; clearing bits 5 and 6 causes the video to go all borky. There's been another thread about it on lkml over the last week or so.
> I looked at that datasheet, and the datasheet for the 8363. Both said > not to program offset 55, and both said the bits we are clearing are > "reserved." Perhaps we should contact VIA directly, tell them the > problem we're having with their current fix, tell them our theory, and > ask if we're right.
Heh, a VIA contact who knows what the hell that register does would be nice :).
In the meantime, I'd probably suggest a patch which looks for clears only bit 7 of Rx55 if an 8363 and an 8365 is found. I'll whip one up later today.
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