On 2/24/21 6:32 AM, Thorsten Leemhuis wrote:
On 23.02.21 18:25, Hans de Goede wrote:
> I've been working with various reporters to try and get the sometimes severe
> gfx glitches which people are seeing with kernel >= 5.10.9 resolved, see the
> following bugs:
> 1843274 - i915 GPU Hang with kernel 5.7 on Haswell (Acer C720P Chromebook)
> 1925346 - Screen glitches after updating to Kernel 5.10.10
> 1925903 - Flickering UI elements, screen instability (Wayland)
> 1931065 - Frequent i915 hangs
> I've written 2 patches 2 address this and asked users to test Fedora-kernel
> scratch-builds with those patches added.
Thx for working on this, I have a friend that is affected by this.
> Reporters have reported a 100% success-rate in getting rid of the gfx
> issues with these 3 reverts.
> […] Upstream has gone silent on the issue of there still being rendering >
artifacts with the 3 cherry-picked fixes unfortunately.
> Given that we are getting more and more bug-reports about this I think
> that we should be do something about this downstream. Upstream seams
> to be aiming for fixing things, rather then reverting, so going with
> i915-fixes.patch will stay the closest to what I expect to land in
> 5.10.y and 5.11.y at some point.
Out of curiosity: Upstream means "the drm/i915 folks here"?
What about GregKH? Is he aware of this?
Yes, Greg is aware of this (I Cc-ed him on my initial bug report to the i915 folks and he
has replied in the upstream thread about this)
He's not Linus, but he hates regressions nearly as much afaics,
so why not maybe he is willing to revert those patches quickly and thus maybe force the
drm/i915 folks into action?
The i915 folks have acted on this, hence the patch with 3 cherry-picked fixes from -next.
This patch seems to work well for most reporters, there is a single reporter who is still
seeing issues with the 3 cherry-picked fixes.
I plan to ping Greg about merging the 3 fixes from -next, assuming that they have landed
in Linus' tree by now
(I have not pinged Greg yet, because first I need to check that the 3 fixes have indeed