Roland Dreier, thank you for reporting this and helping make Ubuntu better. As per http://support.lenovo.com/us/en/products/laptops-and- netbooks/thinkpad-t-series-laptops/thinkpad-t440p an update to your computer's buggy and outdated BIOS is available (2.36). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, if the problem is still reproducible, and the information above is provided, then please mark this report Status New. Otherwise, please mark this as Invalid. Thank you for your understanding. ** Tags added: bios-outdated-2.34 ** Changed in: xserver-xorg-video-intel (Ubuntu) Importance: Undecided => Low ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Confirmed => Incomplete -- 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/1268666 Title: Displayport monitor attached to docking station doesn't work with Haswell/Intel gfx thinkpad t440p Status in xserver-xorg-video-intel package in Ubuntu: Incomplete Bug description: I have a Lenovo T440p laptop with a displayport monitor attached to the docking station. If I turn on the laptop in the docking station, the monitor works under the BIOS but once I get into Linux the monitor doesn't light up. I see the following in kernel log (full logs with drm debugging turned on via xdiagnose attached): [ 116.951792] [drm:intel_dp_start_link_train] *ERROR* failed to enable link training [ 116.954504] [drm:intel_dp_complete_link_train] *ERROR* failed to start channel equalization ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xserver-xorg-video-intel 2:2.99.907-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-2.17-generic 3.13.0-rc7 Uname: Linux 3.13.0-2-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.13.1-0ubuntu1 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: Mon Jan 13 09:29:42 2014 DistUpgraded: Fresh install DistroCodename: trusty DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:220f] NVIDIA Corporation GK208M [GeForce GT 730M] [10de:1290] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:220f] InstallationDate: Installed on 2014-01-11 (2 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140109) MachineType: LENOVO 20ANCTO1WW PlymouthDebug: Error: [Errno 13] Permission denied: '/var/log/plymouth-debug.log' ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-2-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro plymouth:debug splash quiet drm.debug=0xe SourcePackage: xserver-xorg-video-intel UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/04/2013 dmi.bios.vendor: LENOVO dmi.bios.version: GLET43WW (1.18 ) dmi.board.asset.tag: Not Available dmi.board.name: 20ANCTO1WW dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGLET43WW(1.18):bd12/04/2013:svnLENOVO:pn20ANCTO1WW:pvrThinkPadT440p:rvnLENOVO:rn20ANCTO1WW:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20ANCTO1WW dmi.product.version: ThinkPad T440p dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.50-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.0.1-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.0.1-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.907-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu1 xserver.bootTime: Mon Jan 13 09:28:49 2014 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 1034 vendor LGD xserver.version: 2:1.14.5-1ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1268666/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

