Bug 156104

Summary: KDE freezes after changing desktop fonts
Product: [Plasma] kwin Reporter: sombragris
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED REMIND    
Severity: normal    
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description sombragris 2008-01-18 14:54:19 UTC 
Version:            (using KDE 4.0.0)
Compiler:          gcc 4.1.2 
OS:                Linux

Even though this is not a crash per se, it is pretty serious since the whole desktop freezes.

How it happens: After customizing desktop fonts (by invoking systemsettings, "Appearance" in the Look and Feel area), and applying changes either by pressing OK or Apply, the system stops responding. Buttons and windows become totally non-responsive, and this includes the panel and elements within it. The keyboard remains functional, however, and one can get to the virtual ttys by the usual method of pressing Ctrl-Alt-Fnkey.

Examination with top (after switching to a text console) reveals that kwin is using 96% of the CPU.

Killing kwin restores responsiveness in the desktop, but it becomes unusable since kwin is not running and no application can be launched. However, a clean log out is possible.

Thanks for any help into this matter.

Regards,


Eduardo Sánchez
Member, KDE-ES Spanish l10n team
Comment 1 sombragris 2008-01-18 14:58:03 UTC 
It seems that the bug reporter did not get my details right. I am using Slackware 12.0, gcc-4.1.2, with KDE 4.0.0 compiled from released sources. My PC is a 450MHz PIII with 256 MB RAM.
Comment 2 Lubos Lunak 2008-01-24 16:25:29 UTC 
I cannot reproduce. After the lockup happens, can you attach gdb to kwin and provide the backtrace? (http://techbase.kde.org/index.php?title=Development/Tutorials/Debugging/How_to_create_useful_crash_reports)
Comment 3 Lubos Lunak 2008-03-03 21:16:17 UTC 
Waiting for a response.
Comment 4 sombragris 2008-05-18 02:44:15 UTC 
Shortly after filing this bug, I was unable to use Internet or GNU/Linux for a long time. Right now I reverted to KDE 3.5.9 so I request this bug to be kept as closed because I could not reproduce it.

Thanks Lubos and sorry for all this effort.
Regards,

Eduardo