Hi, On 2/14/21 5:00 PM, Hans de Goede wrote: > Hi, > > On 2/11/21 1:26 PM, Hans de Goede wrote: >> Hi, >> >> On 2/11/21 11:49 AM, Chris Wilson wrote: <snip> >>>>> Started looking for scratch page overwrites, and found this little gem: >>>>> https://patchwork.freedesktop.org/patch/420436/?series=86947&rev=1 >>>>> >>>>> Looks promising wrt the cause of overwriting random addresses -- and >>>>> I hope that is the explanation for the glitches/hangs. I have a hsw gt2 >>>>> with gnome shell, piglit is happy, but I suspect it is all due to >>>>> placement and so will only occur at random. >>>> >>>> If you can give me a list of commits to cherry-pick then I can prepare >>>> a Fedora 5.10.y kernel which those added for the group of Fedora users >>>> who are hitting this to test. >>> >>> e627d5923cae ("drm/i915/gt: One more flush for Baytrail clear residuals") >>> d30bbd62b1bf ("drm/i915/gt: Flush before changing register state") >>> 1914911f4aa0 ("drm/i915/gt: Correct surface base address for renderclear") >> >> Thanks, the test-kernel is building now. I will let you know when I have >> heard back from the Fedora users (this will likely take 1-2 days). > > I've heard back from 2 of the reporters who were seeing issues with 5.10.9+ > > And I'm happy to report 5.10.15 + the 3 commits mentioned above cherry-picked > on top fixes the graphics glitches for them. > > So if we can get these 3 commits into 5.10.y and 5.11.y then this should be > resolved. Unfortunately I just got a report that 5.10.15 + the 3 extra fixes mentioned above is still causing issues for one user with a "thinkpad x230 with i5-3320M (HD Graphics 4000)" The user descibes the problem as: "still have some minor black squares popping up while scrolling on Firefox." I've asked this user to test 5.10.14 + the 3 reverts mentioned earlier in the thread and that kernel does not have this issue. Chris, any ideas / more fixes to cherry pick for testing ? Regards, Hans
