i915, broadwell, cannot connect external monitor through Display Port

[Vladimír Kriška]

Hi, on new laptop (thinkpad t450s) I get error message after connecting external monitor:
[drm:intel_dp_complete_link_train [i915]] *ERROR* failed to train DP, aborting

And after that, monitor is turned to sleep mode. Interesting thing is, that monitor is detected.

I've already reported bug to kernel intel-gfx, so some additional informations can be found there:
https://bugzilla.kernel.org/show_bug.cgi?id=94121

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.2
Uname: Linux 3.19.0-031900-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Mar 2 14:17:36 2015
InstallationDate: Installed on 2015-02-26 (3 days ago)
InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.16.2-0ubuntu5
Architecture: amd64
CurrentDesktop: XFCE
DistroRelease: Ubuntu 15.04
InstallationDate: Installed on 2015-03-10 (19 days ago)
InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
Package: xorg 1:7.7+7ubuntu4
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
Tags: vivid
Uname: Linux 3.19.0-10-generic x86_64
UpgradeStatus: Upgraded to vivid on 2015-03-30 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
---
ApportVersion: 2.16.2-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: XFCE
DistUpgraded: 2015-03-30 14:23:37,107 DEBUG enabling apt cron job
DistroCodename: vivid
DistroRelease: Ubuntu 15.04
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 4.3.26, 3.16.0-33-generic, x86_64: installed
 vboxhost, 4.3.26, 3.19.0-10-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:5036]
InstallationDate: Installed on 2015-03-10 (19 days ago)
InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: LENOVO 20BX001YXS
Package: xorg 1:7.7+7ubuntu4
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-10-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
Tags: vivid ubuntu
Uname: Linux 3.19.0-10-generic x86_64
UpgradeStatus: Upgraded to vivid on 2015-03-30 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/09/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET39WW (1.04 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BX001YXS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrJBET39WW(1.04):bd12/09/2014:svnLENOVO:pn20BX001YXS:pvrThinkPadT450s:rvnLENOVO:rn20BX001YXS:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BX001YXS
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.59-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.0-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Mon Mar 30 17:09:53 2015
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 1133
 vendor LGD
xserver.version: 2:1.17.1-0ubuntu3

[penalvch (penalvch)]

Vladimír Kriška, thank you for reporting this and helping make Ubuntu better. Could you please run the following command in the development release from a Terminal as it will automatically gather and attach updated debug information to this report:

apport-collect -p xorg 1427221

Please ensure you have xdiagnose installed, and that you click the Yes button for attaching additional debugging information.

[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

As I said in previous report, for me it looks like Kernel problem.

Error messages are last three lines in dmesg:

[ 620.311295] [drm:intel_dp_complete_link_train [i915]] *ERROR* failed to train DP, aborting
[ 627.706617] [drm:intel_dp_complete_link_train [i915]] *ERROR* failed to train DP, aborting
[ 632.316032] [drm:intel_dp_complete_link_train [i915]] *ERROR* failed to train DP, aborting

[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

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[Vladimír Kriška (ujovlado)]

Hi Christopher,

unfortunatelly it's not a bios problem. I updated it to last version and problem persist. As I mentioned before, it looks like kernel problem for me.

So, after bios update message remained the same.

Here's an output from dmidecode:
JBET45WW (1.10 )
02/03/2015

[penalvch (penalvch)]

Vladimír Kriška, could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-3.XY-rcZ

Where XY and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-3.XY-rcZ

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results.

Thank you for your understanding.

[Vladimír Kriška (ujovlado)]

Hi Christopher,

I tested it with v4.0-rc6-vivid and problem persist.

[penalvch (penalvch)]

Vladimír Kriška, the issue you are reporting is an upstream one. Could you please report this problem to the appropriate mailing list (intel-gfx, not bugzilla) by following the instructions verbatim at https://wiki.ubuntu.com/Bugs/Upstream/kernel ?

Please provide a direct URL to your e-mail to the mailing list once you have made it so that it may be tracked via http://vger.kernel.org/vger-lists.html . It can take a day for the new e-mail to show up in the respective archive.

Thank you for your understanding.

[Vladimír Kriška (ujovlado)]

I updated system today, probably one of the libdrm* packages fixed it.