How to debug X crashes?

Tue Dec 22 09:45:48 UTC 2009

Hi,

I'm using Fedora 12 on a all-Intel laptop in a dual-head configuration. Since 
one week I experience a lot of X crashes (3-4 times per working day), mostly 
1-2 minutes after I plugged in a USB keyboard. Unfortunately abrt does not 
pick up the crash and I can't find a traceback in a log file.

The only visible output is in tty8 but with very bad indentation so it's 
almost impossible to read.

How can I get a sensible traceback out of this?
fs