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[Alexander Lindo <alindo.fm@xxxxxxxxx>]

** Attachment added: "Document containing the Solution to Intel x4500 Garbled Graphics"
   https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1358936/+attachment/4248548/+files/Bug%20Report%20-%20Intel%20X4500%20Garbled%20Graphics%20Fix.pdf

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https://bugs.launchpad.net/bugs/1358936

Title:
  [gm45] L-shaped memory with invalid swizzling

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

Bug description:
  I have been having an issue with garbled graphics on an ASUS K50IJ
  Laptop with Intel GMA X4500 integrated graphics.

  It is a difficult bug to recreate in a timely fashion as it requires
  you to be on the system for a decent amount of time (like an hour,
  sometimes less). Usage scenario to recreate this bug: would be to
  gradually build up to 10 Firefox or Google Chrome tabs. Minimize the
  applications, Open a 4000x3000 pixel photo in GIMP, do some editing.
  After using the computer for a while, go to the launcher and click
  Firefox or Chrome. Close Firefox or Chrome and then close GIMP.
  Firefox will take a while to close and while the hard drive is
  loading, the screen will suddenly become garbled.

  I've been a user of Ubuntu since version 6.06 (Dapper Drake) and have
  been using it exclusively on this laptop since version 12.04. I have
  not had this issue until 14.04.

  The temporary workaround is to log out and log back in, after which
  the graphics are back to normal. I also checked to see if it was a
  memory issue but System Monitor does not appear to display such an
  issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
  Uname: Linux 3.13.0-34-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.3
  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: Tue Aug 19 14:34:16 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Device [1043:1862]
     Subsystem: ASUSTeK Computer Inc. Device [1043:1862]
  InstallationDate: Installed on 2014-08-07 (12 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: ASUSTeK Computer Inc. K50IJ
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-34-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/04/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 217
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: K50IJ
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr217:bd12/04/2009:svnASUSTeKComputerInc.:pnK50IJ:pvr1.0:rvnASUSTeKComputerInc.:rnK50IJ:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
  dmi.product.name: K50IJ
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  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: Tue Aug 19 09:31:11 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                 488 
   vendor                                     LGD
  xserver.version: 2:1.15.1-0ubuntu2

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