https://bugs.kde.org/show_bug.cgi?id=493277
Bug ID: 493277
Summary: Window drag causes "Pageflip timed out! This is a
kernel bug"
Classification: Plasma
Product: kwin
Version: 6.1.5
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: lassi.vaatamoi...@gmail.com
Target Milestone: ---
SUMMARY
Desktop graphics output freezes when starting window move on desktop with mouse
button hold + drag.
Frequency: today 2/3 boots this happened.
STEPS TO REPRODUCE
1. Boot up and sign in to Plasma session
2. Do normal desktop stuff
3. Grab a window at the title bar and start dragging.
OBSERVED RESULT
UI freezes, but for example audio that was playing in the background keeps
playing normally.
EXPECTED RESULT
Window moves and nothing crashes.
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20240916
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.2
Kernel Version: 6.10.9-1-default (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 31,3 GiB of RAM
Graphics Processor: AMD Radeon RX 580 Series
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7B79
System Version: 4.0
ADDITIONAL INFORMATION
syys 17 19:15:47 kaappi kernel: sched: RT throttling activated
syys 17 19:15:51 kaappi kwin_wayland[2035]: kwin_wayland_drm: Pageflip timed
out! This is a kernel bug
syys 17 19:15:56 kaappi kwin_wayland[2035]: kwin_wayland_drm: Pageflip timed
out! This is a kernel bug
syys 17 19:16:01 kaappi kwin_wayland[2035]: kwin_wayland_drm: Pageflip timed
out! This is a kernel bug
syys 17 19:16:06 kaappi kwin_wayland[2035]: kwin_wayland_drm: Pageflip timed
out! This is a kernel bug
syys 17 19:16:11 kaappi kwin_wayland[2035]: kwin_wayland_drm: Pageflip timed
out! This is a kernel bug
syys 17 19:16:16 kaappi kwin_wayland[2035]: kwin_wayland_drm: Pageflip timed
out! This is a kernel bug
syys 17 19:16:21 kaappi kwin_wayland[2035]: kwin_wayland_drm: Pageflip timed
out! This is a kernel bug
There's no way to come out of this. The softest approach is Alt+SysRq+REISUB.
Or just a hard reset.
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