2011/8/3 Paul Gideon Dann <pdgiddie@gmail.com>

On Wednesday 03 Aug 2011 22:25:37 Leon Feng wrote:

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2011/8/3 Paul Gideon Dann <pdgiddie@gmail.com>

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Are you getting a crash report from KDE? Also, have you checked for relevant information in the xorg-server log?

No everything is ok in xorg-server. After kill plasma-desktop, I can login kde. Start krunner ,Firefox and other application can star up. Alt + Tab is used to switch them. So X is working normally.

And KDE is not crashed. It seems plasma-desktop is runnig into a infinit loop. It takes 100% CPU power with nothing output to console.

You may find strace helpful in figuring out what it's trying to do, or maybe attach to it with gdb to get a backtrace?

What video driver are you using, by the way?

After debuging by gdb, problem is caused by digital clock plasmoid not handle zh_CN locale very well. Remove it or change Locale to "C" fix the problem. Bug reported as https://bugs.kde.org/show_bug.cgi?id=279434 Thanks for all people helped. Leon

Paul