X session, with fgrlx driver enabled, restart reproducing video files

Step to reproduce:
- Open any video files with any program
- Result: X session restart (return to lightdm)

Workaround: with vesa driver work properly.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: fglrx 2:8.911-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: fglrx wl
.tmp.unity.support.test.0:

ApportVersion: 1.94-0ubuntu2
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: None
Date: Wed Mar 7 01:31:57 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 5.100.82.38+bdcom, 3.2.0-17-generic, x86_64: installed
 bcmwl, 5.100.82.38+bdcom, 3.2.0-18-generic, x86_64: installed
 fglrx, 8.911, 3.2.0-17-generic, x86_64: installed
 fglrx, 8.911, 3.2.0-18-generic, x86_64: installed
EcryptfsInUse: Yes
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RS780M/RS780MN [Mobility Radeon HD 3200 Graphics] [1002:9612] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:30e4]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120304)
JockeyStatus:
 xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
 kmod:wl - Broadcom STA wireless driver (Proprietary, Enabled, In use) [auto-install]
 xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
MachineType: Hewlett-Packard HP Compaq 6735s
ProcEnviron:
 TERM=xterm
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=77b0f256-6c99-4242-a163-166093bdc6be ro quiet splash vt.handoff=7
SourcePackage: fglrx-installer
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/03/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68GPP Ver. F.0D
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 30E4
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 94.20
dmi.chassis.asset.tag: CNU8384LNC
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68GPPVer.F.0D:bd08/03/2009:svnHewlett-Packard:pnHPCompaq6735s:pvrF.0D:rvnHewlett-Packard:rn30E4:rvrKBCVersion94.20:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq 6735s
dmi.product.version: F.0D
dmi.sys.vendor: Hewlett-Packard
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 2:1.11.4-0ubuntu4
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