concerning X freeze recurring

[Sam Folk-Williams]

Hi,

About once a day my system randomly freezes while running X (gnome). I
am not sure what debugging info to collect at this point, here are some
details:

-This is a t42 thinkpad
-I am running rawhide updating every day
-this started happening about 10 days ago and just happened today again
-it happens about once per day
-it does not seem to matter what applications are running
-it usually happens while i am moving the mouse

The screen completely freezes and the system does not respond to
anything. You can't go to any vtys, and I don't think you can SSH in
although I don't often have another system to try this with. The only
thing to do is a hard reset. I thought maybe the system was panicking,
so I set up kexec/kdump. But the freeze does not trigger a boot into the
kdump kernel, so I suspect it's just frozen not actually panicked.

Anyone else seeing this? Any suggestions for what to do to collect debug
info?

Thanks,
Sam
-- 
Sam Folk-Williams, RHCE
Global Support Services