Can you please boot with drm.debug=0xe added to the kernel command line, and attach the dmesg as well as /var/log/Xorg.0.log?
** Changed in: linux-lts-raring (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1187145 Title: [Lenovo X230i]: No display on second screen through Display Port To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-raring/+bug/1187145/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs