I have a similar bug, but on a different hardware, and I'd like to confirm if it is the same bug, or if I should open a new bug.
Hardware: Lenovo T440p with Ultradock, i7-4810MQ, external monitor connected to dock by DVI. How to reproduce: - Boot with docked laptop. After boot, external monitor is detected and becomes only active display (as per my configuration). - Undock laptop. Laptop screen automatically turned on and desktop resized as expected. - Re-dock laptop. Laptop screen becomes black, external monitor receives no signal, and keyboard no longer responds, nothing (Ctrl+Alt+F1 does not work, keyboard Num Lock no longer changes, etc.). Only solution is to reboot via power button. I previously used Ubuntu 14.04 on same dock, and just recently Xubuntu 16.04, both without problems (re-docking worked fine). I will test a newer kernel, but because of the freeze, I'm not sure how to get extra information about it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565924 Title: [Xenial] Freeze when docking Laptop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1565924/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
