Bug 387219

Summary:	Kwin often falls back to unresponsive black screen while locking the session
Product:	[Plasma] kwin	Reporter:	T R T <trialism>
Component:	compositing	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	crash
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Manjaro
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description T R T 2017-11-22 18:14:48 UTC

I've installed the latest Manjaro KDE edition with the proprietary nvidia driver(384). Kwin's compositor often just crashes while locking the screen after the timeout and leaves me with a black screen and a mouse cursor and I can't do anything. I need to kill kwin_x11 in another tty and restart it to make the desktop working again.

Comment 1 Martin Flöser 2017-11-22 19:08:08 UTC

Please provide a backtrace of the crashing KWin. Though this sounds a lot like an issue in the proprietary driver. If that is the case I fear there is nothing we can do. But we can only investigate with a backtrace. Please note that you might have to compile KWin yourself. Arch does not provide useful backtraces out of the box, so any backtrace by Arch/Manjaro would be useless if it is not self compiled.

Comment 2 Martin Flöser 2017-11-22 19:08:28 UTC

*** Bug 387220 has been marked as a duplicate of this bug. ***

Comment 3 T R T 2017-11-22 19:13:38 UTC

I'm using this driver for a few months(with arch, ubuntu + various DEs) and I never had issues with compositors. Also, I've experienced kwin crashes across multiple versions of the nvidia driver and across multiple distributions. I highly doubt it's an issue with the blob.

Comment 4 T R T 2017-11-30 23:50:55 UTC

This is probably a duplicate too - the bug with Qt and nvidia.