https://bugs.kde.org/show_bug.cgi?id=464395
--- Comment #8 from Cameron Tanner ---
White screen flashing is reported by others, see
https://wiki.archlinux.org/title/Laptop/HP#EliteBook_U82_family_(835_G9/845_G9/865_G9/845_G10).
The recommendation to disable scatter-gather with the kernel boot
https://bugs.kde.org/show_bug.cgi?id=464395
--- Comment #7 from Cameron Tanner ---
kwin environment variables influences this bug. Setting KWIN_COMPOSE=O2 or X
makes the bug go away.
The combination of KWIN_COMPOSE=O2ES and KWIN_OPENGL_INTERFACE=EGL makes the
bug active.
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--- Comment #6 from Cameron Tanner ---
Correction from above post:
* The bug does NOT happen in lx-qt. The laptop primary and external monitor
work fine.
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https://bugs.kde.org/show_bug.cgi?id=464395
Nate Graham changed:
What|Removed |Added
CC||xaver.h...@gmail.com
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Nate Graham changed:
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URL||https://gitlab.freedesktop.
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https://bugs.kde.org/show_bug.cgi?id=464395
--- Comment #4 from Cameron Tanner ---
May be related to https://gitlab.freedesktop.org/drm/amd/-/issues/2354.
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https://bugs.kde.org/show_bug.cgi?id=464395
--- Comment #3 from Cameron Tanner ---
The bug at least seems related to a driver. The bug can be made to go away by
turning off glamor 2D acceleration.
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--- Comment #2 from Cameron Tanner ---
(In reply to Nate Graham from comment #1)
> I would suspect a graphics driver bug, but I'm moving this to KWin to see if
> the KWin devs have any ideas.
There is some new information to report on symptoms.
*
https://bugs.kde.org/show_bug.cgi?id=464395
Nate Graham changed:
What|Removed |Added
Product|kscreenlocker |kwin
Component|general
