Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Confirmed
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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:
Confirmed
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
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