Public bug reported: 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) ** Affects: xserver-xorg-video-intel (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug utopic ** Description changed: 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-gfk, so some additional informations can be found there: + 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) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1427221 Title: i915, broadwell, cannot connect external monitor through Display Port To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1427221/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp