On Thu, 27 Oct 2016, Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> wrote: > While testing our upcoming HDMI audio patches, I experienced pretty bad > screen flicker regressions on my Baytrail compute stick. This happens > with both v09-rc2 and drm-intel-nightly. > > A quick bisect with all the audio patches removed points to the > following commit: > > 2efb813d5388e18255c54afac77bd91acd586908 is the first bad commit > commit 2efb813d5388e18255c54afac77bd91acd586908 > Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Date: Thu Aug 18 17:17:06 2016 +0100 > > drm/i915: Fallback to using unmappable memory for scanout > > More logs below. I don't have the background to fix this myself and I > don't see an obvious link with Baytrail but I hope someone smarter than > me can help fix this Looking around, there's bug [1] with same culprit. Please follow up there. BR, Jani. [1] https://bugs.freedesktop.org/show_bug.cgi?id=98036 > > -Pierre > > > git bisect start > # bad: [d8923dcfa53d59886d432a3fc430e26cb92ce86a] drm/i915: Track > display alignment on VMA > git bisect bad d8923dcfa53d59886d432a3fc430e26cb92ce86a > # good: [03af84fe7f48937941fbb4dcd6cf66c68ae0edd4] drm/i915: Choose > partial chunksize based on tile row size > git bisect good 03af84fe7f48937941fbb4dcd6cf66c68ae0edd4 > # good: [50349247ea807ad0950bbcedb1abb576e6a785db] drm/i915: Drop > ORIGIN_GTT for untracked GTT writes > git bisect good 50349247ea807ad0950bbcedb1abb576e6a785db > # bad: [2efb813d5388e18255c54afac77bd91acd586908] drm/i915: Fallback to > using unmappable memory for scanout > git bisect bad 2efb813d5388e18255c54afac77bd91acd586908 > # good: [821188778b9be2050d45490c4b2b009d51f041e0] drm/i915: Choose not > to evict faultable objects from the GGTT > git bisect good 821188778b9be2050d45490c4b2b009d51f041e0 > # first bad commit: [2efb813d5388e18255c54afac77bd91acd586908] drm/i915: > Fallback to using unmappable memory for scanout > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
