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[EricDHH <1458292@xxxxxxxxxxxxxxxxxx>]

Reverted the machine to Ubuntu Mate 15.04 without compiz, now the bug is
gone. So it seems to depend on a running compiz above ubuntu 14.04 to
mess up the graphics.

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https://bugs.launchpad.net/bugs/1458292

Title:
  Color smear and char loss from scrolling

Status in xorg package in Ubuntu:
  New

Bug description:
  Lenovo Thinkpad x200t
  Ubuntu 15.04 AMD64

  Since upgrade from 14.04 LTS is got following effect.

  To reproduce: Open a program that scrolls graphical elements like firefox, enter some web sites. Now scroll the content with mouse or keyboard up or down.
  Result: Some colors from tiny elements smear about whole lines, visible chars fades out. Scrolling has turned to a haunted house of flickering chars and color expression. It was possible to take a screenshot, the yellow from tiny left border smeared to the right like a leaked ink cartridge.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
  Uname: Linux 3.19.0-18-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.17.2-0ubuntu1.1
  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: Sun May 24 09:24:10 2015
  DistUpgraded: 2015-04-25 23:23:28,368 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroVariant: ubuntu
  DkmsStatus:
   tp-smapi, 0.41, 3.13.0-49-generic, x86_64: installed
   tp-smapi, 0.41, 3.19.0-15-generic, x86_64: installed
   tp-smapi, 0.41, 3.19.0-16-generic, x86_64: installed
   tp-smapi, 0.41, 3.19.0-18-generic, x86_64: installed
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:20e4]
     Subsystem: Lenovo Device [17aa:20e4]
  InstallationDate: Installed on 2014-09-17 (248 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: LENOVO 7453WVK
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-18-generic root=UUID=dbb1913f-e1d6-42eb-b68f-221fd8326a6b ro quiet splash elevator=deadline vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to vivid on 2015-04-25 (28 days ago)
  dmi.bios.date: 11/16/2009
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7WET61WW (3.11 )
  dmi.board.name: 7453WVK
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr7WET61WW(3.11):bd11/16/2009:svnLENOVO:pn7453WVK:pvrThinkPadX200T:rvnLENOVO:rn7453WVK:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 7453WVK
  dmi.product.version: ThinkPad X200T
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Sun May 24 08:40:18 2015
  xserver.configfile: default
  xserver.errors:
   Serial Wacom Tablet WACf004 stylus: Invalid type 'cursor' for this device.
   Serial Wacom Tablet WACf004 stylus: Invalid type 'touch' for this device.
   Serial Wacom Tablet WACf004 stylus: Invalid type 'pad' for this device.
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               16401 
   vendor                                     LEN
  xserver.version: 2:1.17.1-0ubuntu3

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