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Bug#1020391: mesa: Updates to 22.2 RCs cause blank screen on some VirtIO graphics



Source: mesa
X-Debbugs-Cc: me@benthetechguy.net
Version: 22.2.0~rc1-1
Severity: important

Dear Maintainer,

After updating to mesa 22.2.0~rc1-1 on my UTM virtual machine on macOS
(which uses VirtIO graphics), LightDM and anything else using Mesa is
just completely black except for a cursor. This is still present in the
latest version. The default graphics option of UTM is virtio-ramfb-gl,
which is GPU accelerated; I tested virtio-ramfb, and it doesn't have
this issue, though it's not ideal as I can't resize the window and it's
not GPU accelerated. I tested all of the *-gl accelerated graphics
options, and they all have this issue. I also tested a normal
virt-manager VM on Linux, and it doesn't have this issue.

--
Ben Westover

P.S. Also reported in #1017499, but turned out to be a separate issue.

-- System Information:
Debian Release: bookworm/sid
   APT prefers unstable
   APT policy: (500, 'unstable')
Architecture: arm64 (aarch64)

Kernel: Linux 5.19.0-1-arm64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE
not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

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