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[Bug 1476869] [NEW] System Freeze


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Good Afternoon

I have Ubuntu 14.04 LTS in my computer (Lenovo G40-45, 6.7 GB RAM, AMD
A8-6410 APU with AMD Radeon R5 Graphics × 4  processor and Gallium 0.4
on AMD MULLINS for graphics), I was using google chrome ver Versión
43.0.2357.134 (64-bit) for check my email and watch some videos, when
suddenly, the system completely froze, except for my mouse : I could not
change desktop, open a terminal or do anything else, so I had to hard
reboot the PC.

This doesn't happen very often (this happened again one time last
month), but I don't want to damage the computer with these hard reboots
, I checked the kernel log, and around the time this happened, and I saw
something about a lockup on CPU3 and later on CPU2, I think.

Thank you for your help.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8.1
ProcVersionSignature: Ubuntu 3.16.0-43.58~14.04.1-generic 3.16.7-ckt13
Uname: Linux 3.16.0-43-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Tue Jul 21 18:56:13 2015
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus: rtlwifi-new, 0.5~trusty, 3.16.0-43-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GpuHangFrequency: Very infrequently
 Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon APU A4-6000 with R2 Graphics] [1002:9851] (rev 05) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:381a]
InstallationDate: Installed on 2015-06-17 (34 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
MachineType: LENOVO 80E1
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-43-generic.efi.signed root=UUID=a3f269f7-8490-467d-817a-834880a4314e ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/26/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: A2CN25WW(V1.07)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lancer 4B2
dmi.board.vendor: LENOVO
dmi.board.version: 31900059 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G40-45
dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E1:pvrLenovoG40-45:rvnLENOVO:rnLancer4B2:rvr31900059WIN:cvnLENOVO:ct10:cvrLenovoG40-45:
dmi.product.name: 80E1
dmi.product.version: Lenovo G40-45
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri N/A
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Tue Jul 21 18:24:04 2015
xserver.configfile: default
xserver.errors: RADEON(G0): [XvMC] Failed to initialize extension.
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.16.0-1ubuntu1.2~trusty2
xserver.video_driver: radeon

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete

** Tags: amd64 apport-bug bios-outdated-38 compiz-0.9 freeze trusty ubuntu
System Freeze
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