Messages in this thread | | | From | Frans Pop <> | Subject | Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer | Date | Sat, 13 Sep 2008 11:49:54 +0200 |
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On Saturday 13 September 2008, Pallipadi, Venkatesh wrote: > >We have too many entires in PAT list due to RAM pages being marked > >UC by drivers. Unfortunately, there are no quick fixes that can fix > >this for 2.6.27. However, we are aware of the problem here and > >working on a more complete fix for this. We should have the patch > >for it soon. > > Can you try the patch here > http://www.ussg.iu.edu/hypermail/linux/kernel/0809.1/2074.html > And report back whether that resolves the issue.
Yes, that solves the issue. The display is now free of artifacts again, both on logout and when I switch users in X. The pat_memtype_list looks a lot more sane too (see attachment).
So it _was_ a regression caused by pat itself after all, and not the result of incorrect memory handling in the framebuffer code. Could you take over the bug report #10843 in bugzilla (it is currently assigned to the framebuffer people) and ensure it gets closed once the patch gets accepted in Linus' tree?
I'm glad you were able to get this sorted out.
Feel free to add my: Tested-by: Frans Pop <elendil@planet.nl>
Thanks, FJP
PAT memtype list: uncached-minus @ 0x7f6e2000-0x7f6e3000 uncached-minus @ 0x7f6e4000-0x7f6e5000 uncached-minus @ 0x7f6f6000-0x7f6f7000 uncached-minus @ 0x7f6f6000-0x7f6f7000 uncached-minus @ 0x7f6f6000-0x7f6f7000 uncached-minus @ 0x7f6f6000-0x7f6f7000 uncached-minus @ 0x7f6f7000-0x7f6fc000 uncached-minus @ 0x7f6fc000-0x7f6fd000 uncached-minus @ 0x7f6fc000-0x7f6fd000 uncached-minus @ 0x7f6fc000-0x7f6fd000 uncached-minus @ 0x7f6fd000-0x7f6fe000 uncached-minus @ 0x7f6fd000-0x7f6fe000 uncached-minus @ 0x7f6fd000-0x7f6fe000 uncached-minus @ 0x7f6fd000-0x7f6fe000 uncached-minus @ 0x7f6fd000-0x7f6fe000 uncached-minus @ 0x80000000-0x90000000 uncached-minus @ 0x80000000-0x80020000 uncached-minus @ 0x80000000-0x80300000 uncached-minus @ 0x90100000-0x90120000 uncached-minus @ 0x90200000-0x90280000 uncached-minus @ 0x90200000-0x90280000 uncached-minus @ 0x90200000-0x90280000 uncached-minus @ 0x90280000-0x902c0000 uncached-minus @ 0x90280000-0x902c0000 uncached-minus @ 0x902c0000-0x902c4000 uncached-minus @ 0x902c4000-0x902c5000 uncached-minus @ 0x902c4000-0x902c5000 uncached-minus @ 0xfed00000-0xfed01000 uncached-minus @ 0xfed13000-0xfed14000 uncached-minus @ 0xfed1f000-0xfed20000 uncached-minus @ 0xfed40000-0xfed41000
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