https://bugs.kde.org/show_bug.cgi?id=499913
Bug ID: 499913
Summary: kwin_wayland uses 100% CPU when I drag window to top
edge multiple times and freezes desktop
Classification: Plasma
Product: plasmashell
Version: 6.3.0
Platform: Debian unstable
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: antde...@gmail.com
CC: k...@davidedmundson.co.uk
Target Milestone: 1.0
Created attachment 178222
--> https://bugs.kde.org/attachment.cgi?id=178222&action=edit
kwin_wayland process information in journal
Hi,
I noticed that dragging windows with the mouse until the top edge of the screen
is highlighted in blue, and then dragging the window further down, until the
blue border disappears, if I repeat this gesture quickly, the desktop freezes
and no longer responds to mouse and keyboard.
However, it is possible to access in ssh and see the kwin_wayland process
occupying 100% of the cpu.
Killing this process everything resumes.
If you do not intervene in ssh, then the magic sequence of kernel reboot REISUB
is needed to restart the server (even if it still creates problems for mounted
partitions).
In detail the information relating to this process, detected by the journal.
Same problems with the previous plasma version 6.2.5
Thanks,
Antonio
SUMMARY
STEPS TO REPRODUCE
1. open any window, for example konsole terminal;
2. drag the window with the mouse up on the screen until the colored border
appears;
3. still holding the left mouse button pressed, drag the window further down,
until the colored border disappears;
4. always keeping the left mouse button pressed, quickly repeat this operation
several times.
OBSERVED RESULT
after a few seconds the desktop freezes and you can't interact with the mouse
and keyboard.
SOFTWARE/OS VERSIONS
Operating System: Debian GNU/Linux 12
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.10.0
Qt Version: 6.7.2
Kernel Version: 6.12.13-2-liquorix-amd64 (64-bit)
Graphics Platform: Wayland
Processors: 24 × 12th Gen Intel® Core™ i9-12900T
Memory: 31.1 GiB of RAM
Graphics Processor: Intel® UHD Graphics 770
Manufacturer: ASUS
ADDITIONAL INFORMATION
process detected 100%:
---> Sl /bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8
--xwayland-fd 9 --xwayland-display :1 --xwayland-xauthority
/run/user/0/xauth_RDCUHv --xwayland
journal:
---> view attachment
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