Bug 503597

Summary:	Desktop crashes when alt-tabbing from certain games.
Product:	[Plasma] kwin	Reporter:	ttthwvezrjdmeldtud
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	nate
Priority:	NOR
Version First Reported In:	6.3.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description ttthwvezrjdmeldtud 2025-05-01 01:07:50 UTC

***
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***

SUMMARY
Certain games stutter (and I know this isn't a game or system issue as it wasn't doing this before updating to 6.3.4) and when you alt+tab out of the stuttering game my screen goes black and everything crashes and I'm presented with a kwin_wayland crash report.

STEPS TO REPRODUCE
1. Open Kerbal Space program or Insurgency Sandstorm, suffer from stutters
2. Alt+tab
3. Entire desktop crashes, everything closes, kwin_wayland crash reported

OBSERVED RESULT
Black screen, everything closes, eventually everything restarts

EXPECTED RESULT
Not to crash

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 41
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.13.0
Qt Version: 6.8.2
Kernel Version: 6.14.4-200.fc41.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 7600 6-Core Processor
Memory: 30.5 GiB of RAM
Graphics Processor 1: NVIDIA GeForce RTX 4060/PCIe/SSE2
Graphics Processor 2: NVIDIA GeForce RTX 4060/PCIe/SSE2
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: B650M C V2-Y1
System Version: -CF

ADDITIONAL INFORMATION
Here is the pastebin that is separated by game of the crash report information: https://pastebin.com/5YrrhFZz

Comment 1 ttthwvezrjdmeldtud 2025-05-01 01:09:23 UTC

My apologies, I forgot to remove the top part of the report :(

Comment 2 ttthwvezrjdmeldtud 2025-05-01 04:36:35 UTC

Update

I tried launching and play insurgency again. I alt+tabbed out of the game and then this time my plasmashell crashed.

Here is the crash report:

https://pastebin.com/UVePnHy9

Comment 3 ttthwvezrjdmeldtud 2025-05-01 04:55:28 UTC

Update

The plasma renderer notification showed up on my panel. I've never seen this before nor have used it. Google seems to suggest both rendering backend and render loop should be automatic, but mine is defaulting to Software for rendering backend and automatic for render loop. I'm not sure if I should change this or leave it alone. The notification will not go away.

Comment 4 Nate Graham 2025-05-02 14:30:17 UTC

The crash backtrace indicates that the problem is in the proprietary NVIDIA drivers.

Please report this issue to the NVIDIA folks, either by sending an email to linux-bugs@nvidia.com or making a post at https://forums.developer.nvidia.com/c/gpu-graphics/linux. It would be helpful to the NVIDIA developers if you could run `nvidia-bug-report.sh` and attach the resulting file in your report. Thanks!