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[Ricardo Salveti <rsalveti@xxxxxxxxxxxx>]

** Changed in: linux (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1239186

Title:
  [Lenovo ThinkPad X220] External screens shut off randomly

Status in X.org xf86-video-intel:
  Fix Released
Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  I've been trying to figure out what's going on with my external
  display port screens with no luck....but I think I'm getting closer to
  the right direction.

  I upgraded to the latest 13.10 build and turned on DRM debugging with:

  # /etc/modprobe.d/drm.conf
  # We are turning on debug information here

  options drm debug=0xe

  In doing so my logs lit up with lots of graphics activity. However the
  two events that actually had some meaning in terms of a pain point
  where lines like this:

  Oct 12 11:22:02 rnavarro-thinkpad kernel: [  673.201706] [drm:ironlake_irq_handler], Pipe B FIFO underrun
  Oct 12 11:22:02 rnavarro-thinkpad kernel: [  673.201719] [drm:cpt_serr_int_handler], PCH transcoder B FIFO underrun

  and

  Oct 12 11:22:31 rnavarro-thinkpad kernel: [  702.411812]
  [drm:ironlake_irq_handler], Pipe A FIFO underrun

  I noticed that right before either one of my monitors would blank and
  shut off, this message would be emitted in my kern.log

  I think there was some stuff added upstream to detect this, as noted
  here:

  http://lists.freedesktop.org/archives/intel-gfx/2013-July/029882.html

  But i'm not sure what's causing it, much less how to fix it.

  What other information can I give that would help debug?

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,decor,regex,mousepoll,imgpng,vpswitch,grid,wall,gnomecompat,animation,compiztoolbox,move,place,snap,resize,unitymtgrabhandles,workarounds,fade,expo,session,scale,ezoom,unityshell]
  CompositorRunning: None
  Date: Sat Oct 12 11:45:47 2013
  DistUpgraded: 2013-10-12 10:47:24,030 DEBUG enabling apt cron job
  DistroCodename: saucy
  DistroVariant: ubuntu
  DkmsStatus:
   i915-3.9-3.8, 0.02, 3.8.0-31-generic, x86_64: installed
   vboxhost, 4.2.18, 3.11.0-12-generic, x86_64: installed
   vboxhost, 4.2.18, 3.8.0-31-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21da]
  InstallationDate: Installed on 2013-06-30 (103 days ago)
  InstallationMedia: Ubuntu-GNOME 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: LENOVO 4286CTO
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-12-generic root=/dev/mapper/vg_rnavarro--leno-lv_root ro quiet splash i915.semaphores=0 vt.handoff=7
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: Upgraded to saucy on 2013-10-12 (0 days ago)
  XorgConf:
   Section "Device"
           Identifier "intel"
           Driver "intel"
           Option "AccelMethod" "sna"
   EndSection
  dmi.bios.date: 02/14/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET58WW (1.28 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4286CTO
  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:bvr8DET58WW(1.28):bd02/14/2012:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4286CTO
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO
  version.compiz: compiz N/A
  version.ia32-libs: ia32-libs 20090808ubuntu36
  version.libdrm2: libdrm2 2.4.46-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 9.2.1-1ubuntu3
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.3-3ubuntu1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
  xserver.bootTime: Sat Oct 12 11:20:57 2013
  xserver.configfile: /etc/X11/xorg.conf
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               16510 
   vendor                                     DEL
  xserver.version: 2:1.14.3-3ubuntu1
  --- 
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,decor,regex,mousepoll,imgpng,vpswitch,grid,wall,gnomecompat,animation,compiztoolbox,move,place,snap,resize,unitymtgrabhandles,workarounds,fade,expo,session,scale,ezoom,unityshell]
  CompositorRunning: None
  DistUpgraded: 2013-10-12 10:47:24,030 DEBUG enabling apt cron job
  DistroCodename: saucy
  DistroRelease: Ubuntu 13.10
  DistroVariant: ubuntu
  DkmsStatus:
   i915-3.9-3.8, 0.02, 3.8.0-31-generic, x86_64: installed
   vboxhost, 4.2.18, 3.11.0-12-generic, x86_64: installed
   vboxhost, 4.2.18, 3.8.0-31-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21da]
  InstallationDate: Installed on 2013-06-30 (106 days ago)
  InstallationMedia: Ubuntu-GNOME 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: LENOVO 4286CTO
  MarkForUpload: True
  Package: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-12-generic root=/dev/mapper/vg_rnavarro--leno-lv_root ro quiet splash i915.semaphores=0 vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Tags:  saucy ubuntu
  Uname: Linux 3.11.0-12-generic x86_64
  UpgradeStatus: Upgraded to saucy on 2013-10-12 (2 days ago)
  UserGroups: adm audio cdrom dialout dip fax floppy fuse lpadmin mythtv netdev plugdev sambashare scanner sudo tape vboxusers video wireshark
  dmi.bios.date: 07/18/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET69WW (1.39 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4286CTO
  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:bvr8DET69WW(1.39):bd07/18/2013:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4286CTO
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO
  version.compiz: compiz N/A
  version.ia32-libs: ia32-libs 20090808ubuntu36
  version.libdrm2: libdrm2 2.4.46-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 9.2.1-1ubuntu3
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.3-3ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
  xserver.bootTime: Tue Oct 15 08:39:05 2013
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                 728 
   vendor                                     LGD
  xserver.version: 2:1.14.3-3ubuntu2

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