Bug 272053

Summary: KWin hangs on [Alt-Tab] when FlipSwitch is selected as [Alt-Tab] effect.
Product: [Plasma] kwin Reporter: Barafu Albino Cheetah <barafu>
Component: effects-window-managementAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash    
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Barafu Albino Cheetah 2011-04-30 13:44:17 UTC 
Version:           unspecified (using KDE 4.6.2) 
OS:                Linux

When "Effect for windows switching" is set to be FlipSwitch, there is about a 1/3 chance that all KWin hangs up, blocking input. (The only way go is Ctrl-Alt-F1). Even if it didn't, there is the same chance to hang up when using Alt-Tab, pressing it briefly. However, no bugs occur when Alt-Tab is pressed and hoild to see the FlipSwitch animation. 


Reproducible: Always

Steps to Reproduce:
1) Go System Settings -> Desktop Effects. Set "Effect for window switching" to FlipSwitch. 
2)Open a few windows. Press and hold Alt-Tab. Everything works.
3)Press Alt-Tab momentarily several times. Everything hangs.

Actual Results:  
No way to recover found. Key combo that stops desktop effects don't work. Restart your X server. 

Expected Results:  
It seems that when Alt-Tab is pressed for a moment, the animation does not start, does it? Windows should just switch.

That didn't happen in previous versions of KDE on that machine. I have the latest nvidia prop drivers (270.41.06)
Comment 1 Thomas Lübking 2011-04-30 14:26:23 UTC 
probably bug #261323 - please try to disable the window title display to confirm
Comment 2 Barafu Albino Cheetah 2011-04-30 14:42:54 UTC 
Yes, it helps.
Comment 3 Thomas Lübking 2011-04-30 14:49:12 UTC 

*** This bug has been marked as a duplicate of bug 261323 ***