Bug 359473

Summary:	kwin_x11 freezes after opening second window
Product:	[Plasma] kwin	Reporter:	Martin Hunek <hunekm>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	crash
Priority:	NOR
Version First Reported In:	5.5.3
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Martin Hunek 2016-02-16 18:10:09 UTC

After fresh start and login with multiple screens, opening of any two windows results in kwin_x11 service to STOP. All windows then lost it's upper panel, and any new window renders partially out of primary screen (on upper edge).

By sending KILL to kwin_x11 and starting new instance, kwin resumes its function.

Before the last update crash happened just on fresh start, not after forced restart of X11 by Ctrl+Alt+Backspace. In current version it crashes every time.

Reproducible: Always

Steps to Reproduce:
1. Login with multiple screens connected.
2. Open any two windows.
3. After opening of the second one, kwin_x11 service stops.

Actual Results:  
kwin_x11 service stops.

Expected Results:  
not to.

Comment 1 Thomas Lübking 2016-02-16 18:24:52 UTC

You can also CONT for a clean segfault exit.
The othe problem is the segfault that triggers this - if you can reproduce it at will, please gdb into the stopped process and dump a backtrace.

*** This bug has been marked as a duplicate of bug 353428 ***