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[Eric Germán Burgueño <nevermind85@xxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

Today xorg has crashed on me about five times in a row, seemingly
randomly. /var/log/gdm/:0.log.1 shows the following backtrace:

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80eab1b]
1: /usr/bin/X (0x8048000+0x5fac8) [0x80a7ac8]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0x80540c]
3: /usr/bin/X (_CallCallbacks+0x3e) [0x8074e1e]
4: /usr/bin/X (WriteToClient+0x267) [0x80a7607]
5: /usr/lib/xorg/modules/extensions/libdri2.so (ProcDRI2WaitMSCReply+0x62) [0x476bf2]
6: /usr/lib/xorg/modules/extensions/libdri2.so (DRI2WaitMSCComplete+0x75) [0x474fc5]
7: /usr/lib/xorg/modules/drivers/intel_drv.so (0x493000+0x226bc) [0x4b56bc]
8: /usr/lib/xorg/modules/drivers/intel_drv.so (0x493000+0x87d2) [0x49b7d2]
9: /lib/i386-linux-gnu/libdrm.so.2 (drmHandleEvent+0xf5) [0x468665]
10: /usr/lib/xorg/modules/drivers/intel_drv.so (0x493000+0x7937) [0x49a937]
11: /usr/bin/X (WakeupHandler+0x52) [0x8074602]
12: /usr/bin/X (WaitForSomething+0x1ba) [0x80a1f3a]
13: /usr/bin/X (0x8048000+0x27f1e) [0x806ff1e]
14: /usr/bin/X (0x8048000+0x1a81c) [0x806281c]
15: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xe7) [0x152e37]
16: /usr/bin/X (0x8048000+0x1a411) [0x8062411]
Segmentation fault at address 0xb47ec008

Caught signal 11 (Segmentation fault). 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.

(II) Power Button: Close
(II) Unloading evdev
(II) Video Bus: Close
(II) Unloading evdev
(II) Sleep Button: Close
(II) Unloading evdev
(II) AT Translated Set 2 keyboard: Close
(II) Unloading evdev
(II) Unloading synaptics
(II) TPPS/2 IBM TrackPoint: Close
(II) Unloading evdev
(II) ThinkPad Extra Buttons: Close
(II) Unloading evdev
(II) AIGLX: Suspending AIGLX clients for VT switch
 ddxSigGiveUp: Closing log

Attaching apport files.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
CheckboxSubmission: b8069a2f68be06147bad956e6fb857d7
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
CompizPlugins: [core,bailer,detection,composite,opengl,imgjpeg,compiztoolbox,decor,move,imgsvg,text,put,resize,resizeinfo,mousepoll,vpswitch,place,regex,gnomecompat,shift,imgpng,obs,wobbly,ezoom,neg,thumbnail,animation,dbus,workarounds,fade,cube,switcher,rotate]
CompositorRunning: compiz
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.DP.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.DP.3:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.HDMI.A.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1440x900 1440x900
 edid-base64: AP///////wAwrjNAAAAAAAASAQOAHhN46q4QllhTjCgkUFQAAAABAQEBAQEBAQEBAQEBAQEB2CegiFGEGjAwIDYAML4QAAAZhCGgoFGEGjAwIDYAML4QAAAZAAAADwCQCjKQCigUAQAyDAEBAAAA/gBMUDE0MVdQMS1UTEI4ADw=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
Date: Thu May 26 09:42:04 2011
DistUpgraded: Log time: 2011-04-29 06:35:14.669904
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: vboxhost, 4.0.8, 2.6.38-8-generic, i686: installed
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:20e4]
   Subsystem: Lenovo Device [17aa:20e4]
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: LENOVO 6474AV4
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=es_AR.UTF-8
 LC_MESSAGES=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=0e587281-9f07-4794-b8bd-2a142c31d617 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
UpgradeStatus: Upgraded to natty on 2011-05-12 (14 days ago)
dmi.bios.date: 12/06/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET91WW (3.21 )
dmi.board.name: 6474AV4
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7UET91WW(3.21):bd12/06/2010:svnLENOVO:pn6474AV4:pvrThinkPadT400:rvnLENOVO:rn6474AV4:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6474AV4
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO
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 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug compiz-0.9 i386 natty ubuntu

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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/788597

Title:
  Xorg segfaults randomly