I had the same issue. Ville's patch solved the problem. Thanks a lot guys. I wish you all the best!
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. 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 “xserver-xorg-video-intel” package in Ubuntu: In Progress 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 To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1239186/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
