Bug 515320

Summary: KWin freezes completely because it "could not assign memory", journal flood
Product: [Plasma] kwin Reporter: Ángel Navarro <jesusnavarrojr188>
Component: generic-crashAssignee: KWin default assignee <kwin-bugs-null>
Status: REPORTED ---    
Severity: crash    
Priority: NOR    
Version First Reported In: master   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Journal flooded with "could not assign memory" while the compositor is frozen.

Description Ángel Navarro 2026-01-30 22:56:54 UTC
Created attachment 189077 [details]
Journal flooded with "could not assign memory" while the compositor is frozen.

SUMMARY
KWin randomly completely freezes, receives no input, and when you journalctl -b, you see that the logs are flooded with what's on the attached file (shortened version).

STEPS TO REPRODUCE

None, it's not manually reproducible.

OBSERVED RESULT
Title

EXPECTED RESULT
KWin should not freeze

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: Git Master
KDE Frameworks Version: Git Master
Qt Version: Git Master

ADDITIONAL INFORMATION