How to create a backtrace when gdb hangs X?

Matthias Clasen mclasen at redhat.com
Sun Apr 1 13:06:37 UTC 2007


On Sun, 2007-04-01 at 14:37 +0200, dragoran wrote:
> The last gaim update crashes for me when I change my status to away 
> without entering a message or when I change it to invisible.
> I filled a bug here: 
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=234399
> Its not possible to debug this because when it crashes inside gdb X hangs.
> When I kill the gdb process (from a vt) X is back to normal... but still 
> no backtrace...
> I tryed to get a backtrace from a core file ... but useless see the 
> bugreport.
> Any ideas what I can do to debug this?
> 

You can either run the hanging app in a nested X instance (Xnest or
Xephyr), or turn on AllowDeactivateGrabs in your xorg.conf




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