On Mon, 07 Nov 2016, Martin Kepplinger <mart...@posteo.de> wrote: > Am 2016-11-07 um 17:01 schrieb Martin Steigerwald: >> Hello. >> >> Am Montag, 7. November 2016, 16:34:35 CET schrieb Martin Kepplinger: >>> Chris Clayton wrote off list and the mentioned patch fixes the problem >>> for me too, as it does for others. I hope it make it's way into the tree >>> soon: >> >> With 4.9-rc4 I have corruptions that look like the ones reported in this >> thread. >> >> I reported my finding on LKML thread about 3.9-rc4. And in Bugzilla in a bug >> report with an attachment that shows the same type of corruptions as here in >> this thread: >> >> https://patchwork.freedesktop.org/patch/116808/ >> >> mentioned in the other bug report and the following LKML thread does not fix >> the issue for me: >> >> Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: >> Linux 4.9-rc4) >> https://lkml.org/lkml/2016/11/6/70 >> >> https://bugzilla.kernel.org/show_bug.cgi?id=177701#c4
That bug conflates two issues, with the main issue being unrelated to corruption. >> In my case it looks like this: >> >> https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png >> >> >> I have a busy week, so I won´t to any bisecting at the moment. I am >> happy to test another patch during breaks between holding the >> training, but please point me specifically to what patch to >> test. Thank you. > > this one: I just replaced max with roundup manually: As I wrote in another thread, the fix has now been pushed to drm-intel-fixes branch of http://cgit.freedesktop.org/drm-intel. It's -rc4 plus half a dozen fixes, including "drm/i915: Round tile chunks up for constructing partial VMAs" which should fix the corruption. Please try that, and report back. If it doesn't fix the issue, please file a bug at the freedesktop.org bugzilla. BR, Jani. -- Jani Nikula, Intel Open Source Technology Center