X crashes as soon as video playback starts

[Zygmunt Krynicki]

X crashes as soon as something tries to do video playback. I've experienced this even with totem visualization for audio.

X.org log has the following backtrace:

Backtrace:
[ 473.870] 0: /usr/bin/X (xorg_backtrace+0x26) [0x7f138b233206]
[ 473.870] 1: /usr/bin/X (0x7f138b0ab000+0x18c0aa) [0x7f138b2370aa]
[ 473.870] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f138a3d1000+0xfcb0) [0x7f138a3e0cb0]
[ 473.870] 3: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/modules/drivers/fglrx_drv.so (xs111Lookup
[ 473.870] 4: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/modules/drivers/fglrx_drv.so (xclLookupPr
[ 473.870] 5: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/modules/amdxmm.so (X740XvPutImage+0x12e)
[ 473.870] 6: /usr/bin/X (0x7f138b0ab000+0xa6bae) [0x7f138b151bae]
[ 473.870] 7: /usr/lib/xorg/modules/extensions/libextmod.so (0x7f138814e000+0xecb2) [0x7f138815ccb2]
[ 473.870] 8: /usr/bin/X (0x7f138b0ab000+0x4e721) [0x7f138b0f9721]
[ 473.870] 9: /usr/bin/X (0x7f138b0ab000+0x3d64a) [0x7f138b0e864a]
[ 473.870] 10: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f138926876d]
[ 473.870] 11: /usr/bin/X (0x7f138b0ab000+0x3d93d) [0x7f138b0e893d]
[ 473.870] Segmentation fault at address 0x20
[ 473.870]
Caught signal 11 (Segmentation fault). Server aborting

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg 1:7.6+10ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: fglrx
.tmp.unity.support.test.0:

ApportVersion: 1.94.1-0ubuntu1
Architecture: amd64
CompizPlugins: [core,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
Date: Thu Mar 8 13:25:47 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus: fglrx-updates, 8.911, 3.2.0-18-generic, x86_64: installed
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI Cedar PRO [Radeon HD 5450] [1002:68f9] (prog-if 00 [VGA controller])
   Subsystem: PC Partner Limited Device [174b:1341]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120218)
JockeyStatus:
 xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
 xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Disabled, Not in use)
MachineType: System manufacturer System Product Name
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, user)
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=67c0d7c1-b0b1-4094-8a3e-d9ee6da95449 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/08/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0808
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P6T SE
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0808:bd03/08/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6TSE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu5
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.30-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu5
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.