Bug 501132 - kwin_x11 freezes desktop and consumes high amount of CPU usage
Summary: kwin_x11 freezes desktop and consumes high amount of CPU usage
Status: RESOLVED DUPLICATE of bug 493797
Alias: None
Product: kwin
Classification: Plasma
Component: generic-crash (other bugs)
Version First Reported In: 6.3.1
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-03-06 08:53 UTC by imahmadrezas
Modified: 2025-03-07 16:32 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description imahmadrezas 2025-03-06 08:53:59 UTC 
SUMMARY

kwin_x11 uses massive amount of CPU (like infinit loop) and freezes the desktop when I'm trying to maximize a window. It happens rarely but whenever it happens, it is because I was maximizing window by grabbing it using my mouse and pulling it to the ceiling.
Also during this issues all of the plasma shortcuts (like opening terminal) get disabled. The only thing that works is mouse movements (clicking doesn't work) and mouse cursor get stuck in grabbing icon (which is like a fist).

To resolve the problem I have to go to TTY mode send KILL signal to kwin_x11 or reboot the entire system.

SYSTEM INFO
Operating System: Arch Linux 
KDE Plasma Version: 6.3.1
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.13.3-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-7200U CPU @ 2.50GHz
Memory: 7.6 GiB of RAM
Graphics Processor 1: Mesa Intel® HD Graphics 620
Graphics Processor 2: HAINAN
Comment 1 Nate Graham 2025-03-07 16:32:06 UTC 

*** This bug has been marked as a duplicate of bug 493797 ***