* Fwd: 01f05940a9a75e11a2be64993c44ad8dd06e6e26 causes Wayland servers to flicker in non-gl virtio QEMU cards
@ 2023-11-08 0:11 Bagas Sanjaya
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From: Bagas Sanjaya @ 2023-11-08 0:11 UTC (permalink / raw)
To: Linux Kernel Mailing List, Linux Regressions,
Linux DRI Development, Linux Virtualization
Cc: Javier Martinez Canillas, Christian Hergert, Thomas Zimmermann,
Gerd Hoffmann, David Airlie, Gurchetan Singh, Chia-I Wu,
Maxime Ripard, Daniel Vetter, bluescreen_avenger
Hi,
I notice a regression report on Bugzilla [1]. Quoting from it:
> It seems that commit 01f05940a9a75e11a2be64993c44ad8dd06e6e26 introduced an issue impacting wlroots and Weston (possibly others) on QEMU with the virtio card. happens on QEMU, and it happens in virt-manager when I do NOT enable GL. (When GL is ENABLED it seems to be fine oddly)
>
> It introduces odd flickering, Weston's desktop shell flashes when a new window opens, wlroots also acts odd.
> This is QEMU 8.0.4
>
> I have narrowed it down to 01f05940a9a75e11a2be64993c44ad8dd06e6e26. Reverting the commit (it still reverts cleanly), and the flicking goes away on a rebuild and this is on Linux 6.6.
See Bugzilla for the full thread.
Anyway, I'm adding this regression to regzbot:
#regzbot introduced: 01f05940a9a75e https://bugzilla.kernel.org/show_bug.cgi?id=218115
#regzbot title: fb damage clips property enablement causes Wayland non-GL flickering on QEMU
Thanks.
[1]: https://bugzilla.kernel.org/show_bug.cgi?id=218115
--
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