Bug 511327

Summary:	kwin_wayland crashed with SIGSEGV. Desktop unusable.
Product:	[Plasma] kwin	Reporter:	glhno9
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	major	CC:	kde
Priority:	NOR
Version First Reported In:	6.4.5
Target Milestone:	---
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description glhno9 2025-10-29 16:17:42 UTC

SUMMARY
Kwin reloads when trying to launch most applications including displaying the task bar

STEPS TO REPRODUCE
1. Try to open an application, show the task bar (mine is hidden)
2. 
3. 

OBSERVED RESULT
Screen goes black and the desktop is reset. Crash report (attached) in /var/crash

EXPECTED RESULT
No crash

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

ADDITIONAL INFORMATION
Kubuntu 22.10. Didn't have this issue in Kubuntu 22.04.

Comment 1 glhno9 2025-10-29 16:18:46 UTC

Operating System: Kubuntu 25.10
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.17.0-6-generic (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Xeon® CPU E3-1230 v3 @ 3.30GHz
Memory: 16 GiB of RAM (15.6 GiB usable)
Graphics Processor: NVIDIA GeForce GTX 970

Comment 2 glhno9 2025-10-29 16:22:21 UTC

This affects 25.10, not 22.10 (apologies)

Comment 3 David Edmundson 2025-10-29 16:26:04 UTC

>Crash report (attached) in /var/crash

There does not seem to be anything attached

Comment 4 glhno9 2025-10-29 16:37:18 UTC

It seems the report from /var/crash is too big to upload here. I've uploaded it to:
https://wormhole.app/o4N0jq#px_Ajn7qAcEa4lG9CXxDcQ

Comment 5 glhno9 2025-11-01 07:39:09 UTC

I fixed this by upgrading to the latest nvidia drivers.