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[Daniel Drake <dan@xxxxxxxxxxxxxxx>]

Public bug reported:

Since upgrading from Ubuntu 14.04 to Ubuntu 14.10, I have been seeing
graphics corruption under GNOME 3 several times per day, including:

1. Maximized windows (especially gvim) have rectangular regions of their
titlebar totally invisible and transparent, so the contents of whatever
window or image is behind them shows through. Easy to reproduce but
problem disappears once a screenshot is taken :/

2. Strange "diagonal display corruption" in firefox, usually random
glyphs appearing on top of the website, but sometimes it is other
"illegible data" similarly aligned in diagonal lines. Happens several
times per day. Screenshot attached.

3. Occasionally some glyphs from any/all apps disappear, leaving an
"alphabet soup" type effect where only a certain proportion of letters
in displayed text is visible. Hardest to reproduce, perhaps twice per
week, I'll take a screenshot next time.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xorg 1:7.7+7ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Fri Nov 21 07:35:14 2014
DistUpgraded: 2014-10-24 10:27:21,390 DEBUG enabling apt cron job
DistroCodename: utopic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0c) (prog-if 00 [VGA controller])
   Subsystem: Intel Corporation Device [8086:2055]
InstallationDate: Installed on 2014-08-30 (83 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=39a14ffe-9286-4cfa-9362-bf5bfef37843 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to utopic on 2014-10-24 (27 days ago)
version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.56-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
xserver.bootTime: Fri Nov 21 06:30:50 2014
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                               53336 
 vendor                                     DEL
xserver.version: 2:1.16.0-1ubuntu1

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug corruption ubuntu utopic

** Attachment added: "Diagonal display corruption in firefox"
   https://bugs.launchpad.net/bugs/1394997/+attachment/4265081/+files/diagnoal.png

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https://bugs.launchpad.net/bugs/1394997

Title:
  Intel graphics corruption since upgrade to Ubuntu 14.10

Status in “xorg” package in Ubuntu:
  New

Bug description:
  Since upgrading from Ubuntu 14.04 to Ubuntu 14.10, I have been seeing
  graphics corruption under GNOME 3 several times per day, including:

  1. Maximized windows (especially gvim) have rectangular regions of
  their titlebar totally invisible and transparent, so the contents of
  whatever window or image is behind them shows through. Easy to
  reproduce but problem disappears once a screenshot is taken :/

  2. Strange "diagonal display corruption" in firefox, usually random
  glyphs appearing on top of the website, but sometimes it is other
  "illegible data" similarly aligned in diagonal lines. Happens several
  times per day. Screenshot attached.

  3. Occasionally some glyphs from any/all apps disappear, leaving an
  "alphabet soup" type effect where only a certain proportion of letters
  in displayed text is visible. Hardest to reproduce, perhaps twice per
  week, I'll take a screenshot next time.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: xorg 1:7.7+7ubuntu2
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  Uname: Linux 3.16.0-24-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Fri Nov 21 07:35:14 2014
  DistUpgraded: 2014-10-24 10:27:21,390 DEBUG enabling apt cron job
  DistroCodename: utopic
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0c) (prog-if 00 [VGA controller])
     Subsystem: Intel Corporation Device [8086:2055]
  InstallationDate: Installed on 2014-08-30 (83 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=39a14ffe-9286-4cfa-9362-bf5bfef37843 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to utopic on 2014-10-24 (27 days ago)
  version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
  xserver.bootTime: Fri Nov 21 06:30:50 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               53336 
   vendor                                     DEL
  xserver.version: 2:1.16.0-1ubuntu1

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