Bug 322600

Summary: Closing a grayed-out window causes flicker
Product: [Plasma] kwin Reporter: Nikos Chantziaras <realnc>
Component: effects-variousAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal    
Priority: NOR    
Version: 4.10.95   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:

Description Nikos Chantziaras 2013-07-20 08:14:49 UTC 
When closing a window that is currently grayed out by a modal dialog in front of it (like one asking "Do you want to quit?"), then there's very noticeable flicker when the window is closing. First it seems to slowly fade out, but at the end of the fade operation it just abruptly pops into existence again, and then at the end disappears again.

Reproducible: Always

Steps to Reproduce:
Make sure that the "Focus / Dialog Parent" and "Appearance / Fade" desktop effects are enabled. Then:

1. Run KWrite
2. Write something and don't save
3. Try to quit KWrite. In the dialog that appears, click "Discard"



This happens with all KWin back-ends (XRender, OpenGL 1.2/2.0/3.1).

I'm using:
Qt 4.8.4
XOrg server 1.14.2
NVidia drivers 325.08 (also happens with 319.32)
Kernel 3.9.10
Comment 1 Thomas Lübking 2013-07-20 11:57:50 UTC 
Falls into category of bug #321897

The fade needs to keep it at 0 opacity until all other animations finished. (while ultimately somehow aligning animation times would be better)

*** This bug has been marked as a duplicate of bug 321897 ***