I've just upgraded from xorg 6.8.2.dfsg.1-2 to 6.9.0.dfsg.1-4 and
Xorg catches signal 11 on startup. After trying different configurations
in xorg.conf I've found that Xorg fails to load even when called from
xorgcfg, and 'Xorg -configure' (which is called from xorgcfg) catches
signal 11 too.

When called with '-configure' option, Xorg does not load any
configuration but tries to make one by itself. Here is the output of
'Xorg -configure':

-----------------------------------------------------------------------------
$ Xorg -configure

X Window System Version 6.9.0 (Debian 6.9.0.dfsg.1-4 20060114230205 David Nusinow <email address hidden>)
Release Date: 21 December 2005
X Protocol Version 11, Revision 0, Release 6.9
Build Operating System: Linux 2.6.15-1-686 i686 [ELF] 
Current Operating System: Linux presto 2.6.15.1 #1 PREEMPT Fri Jan 20 03:23:13 MSK 2006 i686
Build Date: 14 January 2006
	Before reporting problems, check http://wiki.X.Org
	to make sure that you have the latest version.
Module Loader present
OS Kernel: Linux version 2.6.15.1 (****@presto) (gcc version 4.0.3 20060104 (prerelease) (Debian 4.0.2-6)) #1 PREEMPT Fri Jan 20 03:23:13 MSK 2006 
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: Fri Feb  3 02:50:32 2006

   *** If unresolved symbols were reported above, they might not
   *** be the reason for the server aborting.

Backtrace:
0: Xorg(xf86SigHandler+0x88) [0x80897b8]
1: [0xffffe420]
2: Xorg(xf86DriverlistFromCompile+0x29) [0x80813b9]
3: Xorg(DoConfigure+0x11) [0x8073dc1]
4: Xorg(InitOutput+0x655) [0x8071a05]
5: Xorg(main+0x239) [0x80d6589]
6: /lib/tls/libc.so.6(__libc_start_main+0xd0) [0xb7d9bed0]
7: Xorg [0x8070131]

Fatal server error:
Caught signal 11.  Server aborting


Please consult the The X.Org Foundation support 
	 at http://wiki.X.Org
 for help. 
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

-----------------------------------------------------------------------------

PCI devices list:
-----------------------------------------------------------------------------
$ lspci
0000:00:00.0 Host bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
0000:00:00.1 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
0000:00:00.3 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
0000:00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)
0000:00:02.1 Display controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)
0000:00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03)
0000:00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03)
0000:00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 03)
0000:00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 03)
0000:00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 83)
0000:00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 03)
0000:00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 03)
0000:00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 03)
0000:00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)
0000:01:03.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 02)
0000:01:07.0 Network controller: Intel Corporation PRO/Wireless 2200BG (rev 05)
0000:01:0a.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
0000:01:0c.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
-----------------------------------------------------------------------------

--
Best regards,
     Ivan Tarasov