Comment 4 for bug 223870

When it crashes it does not produce and Xorg.0.log file.

Also, I've tried alt-SysRq (my kernel is set up for this) but it doesn't help with this crash.

I've tried running gdb from a remote terminal, I'll paste the output below. When I do that, it ends up hanging in the usual way. I've also looked around to see if its doing a core dump anywhere, but couldn't find one. (I did install xserver-xorg-core-dbg, and add the untrap signals lines to my xorg.conf).

bush@parapithecus ~$ sudo gdb /usr/bin/Xorg
[sudo] password for bush:
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu"...
(gdb) run -keeptty -dumbSched
Starting program: /usr/bin/Xorg -keeptty -dumbSched
[Thread debugging using libthread_db enabled]

This is a pre-release version of the X server from The X.Org Foundation.
It is not supported in any way.
Bugs may be filed in the bugzilla at http://bugs.freedesktop.org/.
Select the "xorg" product for bugs you find in this release.
Before reporting bugs in pre-release versions please check the
latest version in the X.Org Foundation git repository.
See http://wiki.x.org/wiki/GitPage for git access instructions.

X.Org X Server 1.4.0.90
Release Date: 5 September 2007
X Protocol Version 11, Revision 0
Build Operating System: Linux Ubuntu (xorg-server 2:1.4.1~git20080131-1ubuntu9)
Current Operating System: Linux parapithecus 2.6.24-16-generic #1 SMP Thu Apr 10 12:47:45 UTC 2008 x86_64
Build Date: 15 April 2008 05:41:18PM

 Before reporting problems, check http://wiki.x.org
 to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
 (++) from command line, (!!) notice, (II) informational,
 (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sat May 3 16:42:11 2008
(==) Using config file: "/etc/X11/xorg.conf"
[New Thread 0x7f8ca58b46e0 (LWP 6096)]
(WW) intel: No matching Device section for instance (BusID PCI:0:2:1) found

IT hangs here.