xorg crash

[kolya]

Binary package hint: xorg

xorg crashes with following trace:
Backtrace:
[ 15096.873] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80eab1b]
[ 15096.873] 1: /usr/bin/X (0x8048000+0x5fac8) [0x80a7ac8]
[ 15096.873] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb77b740c]
[ 15096.873] 3: /usr/bin/X (_CallCallbacks+0x3e) [0x8074e1e]
[ 15096.873] 4: /usr/bin/X (WriteToClient+0x267) [0x80a7607]
[ 15096.873] 5: /usr/lib/xorg/modules/extensions/libdri2.so (ProcDRI2WaitMSCReply+0x62) [0xb7363bf2]
[ 15096.873] 6: /usr/lib/xorg/modules/extensions/libdri2.so (DRI2WaitMSCComplete+0x75) [0xb7361fc5]
[ 15096.873] 7: /usr/lib/xorg/modules/drivers/radeon_drv.so (0xb724f000+0xce17c) [0xb731d17c]
[ 15096.873] 8: /usr/lib/xorg/modules/drivers/radeon_drv.so (0xb724f000+0xd1f12) [0xb7320f12]
[ 15096.873] 9: /lib/i386-linux-gnu/libdrm.so.2 (drmHandleEvent+0xf5) [0xb734b665]
[ 15096.873] 10: /usr/lib/xorg/modules/drivers/radeon_drv.so (0xb724f000+0xd1e2f) [0xb7320e2f]
[ 15096.873] 11: /usr/bin/X (WakeupHandler+0x52) [0x8074602]
[ 15096.874] 12: /usr/bin/X (WaitForSomething+0x1ba) [0x80a1f3a]
[ 15096.874] 13: /usr/bin/X (0x8048000+0x27f1e) [0x806ff1e]
[ 15096.874] 14: /usr/bin/X (0x8048000+0x1a81c) [0x806281c]
[ 15096.874] 15: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xe7) [0xb74cce37]
[ 15096.874] 16: /usr/bin/X (0x8048000+0x1a411) [0x8062411]
[ 15096.874] Segmentation fault at address 0xb5fd4008
[ 15096.874]
Caught signal 11 (Segmentation fault). Server aborting

(I've attached complete xorg log)

I'd be happy to assist debugging in any possible way.
Thanks.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,imgsvg,imgpng,resize,imgjpeg,move,compiztoolbox,regex,text,gnomecompat,animation,place,animationaddon,mousepoll,wall,wobbly,notification,expo,session,staticswitcher,fade,thumbnail,workarounds,scale]
CompositorRunning: compiz
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1680x1050 1400x1050 1280x1024 1440x900 1280x960 1280x854 1280x800 1280x720 1152x768 1024x768 800x600 848x480 720x480 640x480
 edid-base64: AP///////wBMo1AyAAAAAAAQAQOAIRV4Cof1lFdPjCcnUFQAAAABAQEBAQEBAQEBAQEBAQEBky6QoGAaHkAwICYAS88QAAAZAAAADwAAAAAAAAAAADzSAmQAAAAA/gBDRjI2NAIxNTRQMgogAAAA/gAoP0hUfaPT/wIBCiAgAFU=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
Date: Mon May 2 12:43:44 2011
DistUpgraded: Log time: 2011-04-29 21:50:36.429035
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 ATI Technologies Inc Radeon Mobility X1400 [1002:7145] (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:2003]
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
Lsusb:
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. MM061
ProcEnviron:
 LANGUAGE=ru_RU:en
 PATH=(custom, user)
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae root=UUID=373b88e9-4be7-4419-9e8d-2a0f4a355367 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
UpgradeStatus: Upgraded to natty on 2011-04-30 (2 days ago)
dmi.bios.date: 06/13/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A17
dmi.board.name: 0XD720
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA17:bd06/13/2007:svnDellInc.:pnMM061:pvr:rvnDellInc.:rn0XD720:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: MM061
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[kolya (mar-kolya)]

BTW, problem appeared after I upgraded to Natty.
Before this I didn't have such crashes at all. I couldn't yet figure out what exactly causes crash.

[Bryce Harrington (bryce)]

> I'd be happy to assist debugging in any possible way.

Okay, please collect a full backtrace on this crash. Directions are at:

  http://wiki.ubuntu.com/X/Backtracing

[Bryce Harrington (bryce)]

This is very similar to bug #774978 but hard to say for sure since the most notable call (#1) is missing symbols.

If you can collect a full backtrace that would help pinpoint it.

Alternately, if you can detail the steps to reproduce the problem that would help me even more.