https://bugs.kde.org/show_bug.cgi?id=505762
Bug ID: 505762
Summary: Error "kwin_wayland_drm: Atomic test failed!
Permission denied" with 6.16-rc1
Classification: Plasma
Product: kwin
Version First git master
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-drm
Assignee: kwin-bugs-n...@kde.org
Reporter: kyle.de...@mykolab.com
CC: xaver.h...@kde.org
Target Milestone: ---
SUMMARY
Starting with Linux kernel version 6.16-rc1, I have started seeing kwin_wayland
soft-freeze with "kwin_wayland_drm: Atomic test failed! Permission denied"
errors in journalctl. Switching to tty doesn't work ~ but REISUB does, upon
which I can restart the compositor.
The freezing appears to happen upon turning off the screen and turning it back
on ~ along with other apparently random moments during normal system usage when
kwin_wayland tries to make such a test and just can't keep going, so it locks
up entirely.
STEPS TO REPRODUCE
1. Install Linux 6.16-rc1
2. Start kwin_wayland
3. Turn off screen, turn on screen, maybe perfect atomic test somehow?
4. Profit? Not sure whether this is the only cause.
OBSERVED RESULT
Compositor soft-freeze with no restart or crash
EXPECTED RESULT
Functioning normally?
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.4.80
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
Kernel Version: 6.16.0-rc1-1-custom-bcachefs-git-00060-ge1bce19af73a (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 7800X3D 8-Core Processor
Memory: 32 GiB of RAM (30.4 GiB usable)
Graphics Processor 1: AMD Radeon RX 7900 XTX
Graphics Processor 2: AMD Radeon Graphics
Manufacturer: ASRock
Product Name: X670E Pro RS
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