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[Nevidljivi Prijatelj <trulexkrpa@xxxxxxxxx>]

Same problem here, ehile working, usualy in web browser, system freezes
for couple of seconds, and after it unfreezes fonts are corrupt and most
letters are replaced by some sort of symbols. It can be fixed by
rebooting the system. Error occurs on a daily basis.

I use a Haswell Pentium G3420 and integratet graphics card.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1330385

Title:
  Intel GPU crash corrupts fonts

Status in xserver-xorg-video-intel package in Ubuntu:
  Confirmed

Bug description:
  The bug occurs regularly, without any special action. I'm just working
  in gnome-terminal und using Firefox.

  Symptoms:
  * While working, the system suddenly freezes for a few seconds (like a typical crash in the X system)
  * Then I can continue work, but with corrupted fonts and views
  * New windows are sometimes readable again

  Don't know if the package is correct. Dmesg shows:

  [ 3647.214489] [drm] stuck on render ring
  [ 3647.214499] [drm] GPU crash dump saved to /sys/class/drm/card0/error
  [ 3647.214500] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
  [ 3647.214501] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
  [ 3647.214502] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
  [ 3647.214502] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  Uname: Linux 3.13.0-29-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  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
  CurrentDesktop: Unity
  Date: Mon Jun 16 10:22:11 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 4.3.10, 3.13.0-24-generic, x86_64: installed
   virtualbox, 4.3.10, 3.13.0-27-generic, x86_64: installed
   virtualbox, 4.3.10, 3.13.0-29-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21fb]
  InstallationDate: Installed on 2014-05-12 (34 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 2356LQG
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-29-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/30/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G7ET94WW (2.54 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2356LQG
  dmi.board.vendor: LENOVO
  dmi.board.version: Win8 Pro DPK TPG
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG7ET94WW(2.54):bd04/30/2013:svnLENOVO:pn2356LQG:pvrThinkPadT430s:rvnLENOVO:rn2356LQG:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2356LQG
  dmi.product.version: ThinkPad T430s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Mon Jun 16 09:15:09 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                8510 
   vendor                                     AUO
  xserver.version: 2:1.15.1-0ubuntu2

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