Bug 321959

Summary:	kwin crashes after exiting opengl animated slideshow in gwenview when "suspend desktop effects for fullscreen windows" is enabled
Product:	[Plasma] kwin	Reporter:	rockonthemoonfm
Component:	compositing	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	crash
Priority:	NOR
Version First Reported In:	4.10.90
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	gdb report

Description rockonthemoonfm 2013-07-04 18:33:08 UTC

kwin always crashes after exiting opengl animated slideshow in gwenview when "suspend desktop effects for fullscreen windows" is enabled.
Gwenview opengl animations looks buggy..
Attached gdb info.

Reproducible: Always

Steps to Reproduce:
1. enable "Suspend desktop effects for fullscreen windows" in kwin kcm
2. open gwenview, select "Animations: openGL" in "Settings > Configure"
3. start a photo Slideshow, then exit [esc]

Actual Results:  
kwin crashes.

Expected Results:  
kwin doesn't crash.

Comment 1 rockonthemoonfm 2013-07-04 18:33:45 UTC

Created attachment 80948 [details]
gdb report

Comment 2 Thomas Lübking 2013-07-04 18:55:33 UTC

Despite the backtrace actually lacks the relevant info, it's a dupe of the most famous kwin bug (or rather mesa, eventually intel) bug ever.
The driver has issues with several GL contexts and unredirection....

> enable "Suspend desktop effects for fullscreen windows" in kwin kcm
... and that's ultimately why this off by default.

-> For clients that matter (games), use composite blocking, otherwise just keep the window redirected along all others.

We had several considerations to dump unredirection.

*** This bug has been marked as a duplicate of bug 252817 ***