Bug 515320 - KWin freezes completely because it "could not assign memory", journal flood
Summary: KWin freezes completely because it "could not assign memory", journal flood
Status: REPORTED
Alias: None
Product: kwin
Classification: Plasma
Component: generic-crash (other bugs)
Version First Reported In: master
Platform: Arch Linux Linux
: NOR crash
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2026-01-30 22:56 UTC by Ángel Navarro
Modified: 2026-01-30 22:56 UTC (History)
0 users

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

Attachments
Journal flooded with "could not assign memory" while the compositor is frozen. (102.03 KB, text/plain)
2026-01-30 22:56 UTC, Ángel Navarro 		Details
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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