Bug#644780: xserver-xorg: Xserver segfaults randomly
On Sat, Oct 8, 2011 at 17:18:15 -0700, Matthew Lai wrote:
> Package: xserver-xorg
> Version: 1:7.6+8
> Severity: critical
> Tags: upstream
> Justification: causes serious data loss
> Dear Maintainer,
> I am seeing Xorg crashing to gdm without any obvious pattern, though it seems
> to happen a lot more when I'm laying out circuits in KiCad (but I cannot find
> repro steps). It has happened with just Firefox open, too.
> It happens about every hour when I use KiCad, otherwise every few days.
> The laptop has Intel integrated graphics (in Core i3) and an nVidia card
> (Optimus/hybrid switching), but the nVidia card is not used and is powered off
> through ACPI, with the driver (nouveau) blacklisted.
> Here is Xorg.0.old after a crash. The callstack refers to Intel driver, but I
> don't know where the problem is. I tried installing as many related debugging
> symbols packages as I can find, but it looks like some function names are still
> not resolved.
You should use gdb to get a backtrace, see