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[Jussi Pakkanen <jussi.pakkanen@xxxxxxxxxxxxx>]

I have a different graphics card now so I can't test this any longer.

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https://bugs.launchpad.net/bugs/1135668

Title:
  Intel graphics fails when bringing monitor out of sleep

Status in “linux” package in Ubuntu:
  Incomplete
Status in “xserver-xorg-video-intel” package in Ubuntu:
  Invalid
Status in “linux” source package in Raring:
  Confirmed
Status in “xserver-xorg-video-intel” source package in Raring:
  Invalid

Bug description:
  I have a HP LP2475w monitor. Sometimes when the system has put it to
  sleep, it fails in bringing it back up again. The screen remains
  blank. Even changing virtual terminals with ctrl+alt+f1 does not work.
  Ssh'ing in and running 'sudo service lightdm restart' makes it come
  back up again.

  This error shows up in dmesg:

  [18380.721810] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
  invalid, remainder is 125

  This monitor worked flawlessly on my previous computer which had
  NVidia + the binary driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: xorg 1:7.7+1ubuntu4
  ProcVersionSignature: Ubuntu 3.8.0-7.15-generic 3.8.0
  Uname: Linux 3.8.0-7-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.8-0ubuntu4
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: Error: command ['gsettings', 'get', 'org.compiz.opengl:/org/compiz/', 'unredirect-driver-blacklist'] failed with exit code 1: No such key 'unredirect-driver-blacklist'
  CompositorUnredirectFSW: true
  Date: Thu Feb 28 14:21:03 2013
  DistUpgraded: 2013-01-14 14:23:18,255 DEBUG enabling apt cron job
  DistroCodename: raring
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0162] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Intel Corporation Device [8086:2032]
  InstallationDate: Installed on 2012-10-09 (142 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120918.1)
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.8.0-7-generic root=UUID=13f61e3f-9582-47a8-988c-a29fed44d3af ro rootflags=subvol=@ quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to raring on 2013-01-14 (44 days ago)
  dmi.bios.date: 01/25/2013
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: EBH7710H.86A.0099.2013.0125.1400
  dmi.board.name: DH77EB
  dmi.board.vendor: Intel Corporation
  dmi.board.version: AAG39073-304
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnIntelCorp.:bvrEBH7710H.86A.0099.2013.0125.1400:bd01/25/2013:svn:pn:pvr:rvnIntelCorporation:rnDH77EB:rvrAAG39073-304:cvn:ct3:cvr:
  version.compiz: compiz 1:0.9.9~daily12.12.05-0ubuntu2
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.42-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.2-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.3-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu3
  xserver.bootTime: Thu Feb 28 14:12:29 2013
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.13.2-0ubuntu2
  xserver.video_driver: intel

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