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[Salih114 <1340115@xxxxxxxxxxxxxxxxxx>]

I updated my BIOS. Nothing changed. The black squares still appear for a
second in large distances. It is not a huge problem but something seems
to be wrong. Could it have to do with the cpu scaler (I use energy
saving for the most of the time.)

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https://bugs.launchpad.net/bugs/1340115

Title:
  Black squares appear for 1-2 sec. on almost the whole screen and then
  disappear.

Status in xorg package in Ubuntu:
  Expired

Bug description:
  This problem exists since updating from ubuntu 12.04 to 14.04. It may
  have to do with the drivers for my intel HD4000 gpu. I'm not able to
  reproduce the error, which occures randomly.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2
  Uname: Linux 3.13.0-30-generic i686
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: i386
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  Date: Thu Jul 10 11:59:03 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   acpi-call, 20130623, 3.13.0-30-generic, i686: installed
   tp-smapi, 0.41, 3.13.0-30-generic, i686: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:5008]
  InstallationDate: Installed on 2014-07-07 (3 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
  MachineType: LENOVO 3358BBG
  ProcEnviron:
   LANGUAGE=de_DE
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic root=UUID=d10ccc8f-9556-4813-86b0-f1a879385e4c ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/18/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: H4ET92WW (2.52 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 3358BBG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrH4ET92WW(2.52):bd04/18/2013:svnLENOVO:pn3358BBG:pvrThinkPadEdgeE130:rvnLENOVO:rn3358BBG:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 3358BBG
  dmi.product.version: ThinkPad Edge E130
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
  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: Thu Jul 10 11:46:18 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                1161 
   vendor                                     IVO
  xserver.version: 2:1.15.1-0ubuntu2

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