Problem with qutebrowser (and only it) after Mesa upgrade

[intpl]

After system upgrade three days ago Qutebrowser started to behave terribly. Entire window become white for milliseconds, scattered parts of window. Pretty much unusable. Chromium and Google Chrome and Firefox which I have installed on the system all work fine. The issue is only with Qutebrowser. It worked perfectly fine before the upgrade.

I can see in the xbps log these 4 Mesa packages were updated (but also libglapi and libgbm which may also be related):

mesa-21.3.2_1
mesa-dri-21.3.2_1
mesa-intel-dri-21.3.2_1
mesa-vulkan-intel-21.3.2_1

This is my changed /etc/modprobe.d/intel-graphics.conf:

options i915 enable_dc=2 enable_fbc=1 fastboot=1

I use AwesomeWM if that's related.

[intpl]

Things like this happening all the time

[ericonr]

@ahesford has had the same issues, I believe.

Downgrading the packages locally can fix it temporarily, fwiw.

Possibly https://gitlab.freedesktop.org/mesa/mesa/-/issues/5745

[ahesford]

I did have the same issue on Intel Xe and UHD Graphics 630 with new mesa and downgrading the mesa packages resolved it.

[jsbronder]

As noted in this bug, exporting MESA_LOADER_DRIVER_OVERRIDE=i965 appears to have resolved this for me.

https://gitlab.freedesktop.org/mesa/mesa/-/issues/5744

[intpl]

As noted in this bug, exporting MESA_LOADER_DRIVER_OVERRIDE=i965 appears to have resolved this for me.

https://gitlab.freedesktop.org/mesa/mesa/-/issues/5744

This fixes it. Thanks! Idk if I should close the issue now

[ahesford]

Please leave the issue open. We'll close when the workaround is no longer needed.

[ahesford]

I had a chance to try the MESA_LOADER_DRIVER_OVERRIDE workaround (it isn't really a fix) on an Intel Xe device, and was met with errors reporting

gfx12 and newer are not supported on i965
libGL error: failed to create dri screen
libGL error: failed to load driver: i965

There were no glitches, but it seems Mesa fails entirely here. Thus, the workaround seems to be limited to older devices.

It seems that a proper fix may have been merged; maybe we can test a backport pending another upstream release.

[intpl]

in case anybody is wondering, installing 21.3.3 from this commit does NOT fix the issue: #34768

again, for wonderers: no WebGL support when setting MESA_LOADER_DRIVER_OVERRIDE=i965 can be fixed by providing --qt-flag ignore-gpu-blocklist argument to qutebrowser (btw you may want to enable --qt-flag enable-gpu-rasterization also)

[ardadem]

mesa-21.3.3-fix-bug-5731.patch

try this patch from https://gitlab.freedesktop.org/mesa/mesa/-/issues/5731

[ericonr]

Should be fixed in 1bf20e9

[ericonr]

(please reopen if not)