Having similar issue. Two laptops both dells slightly different models. Both using Dell E-Port Plus.
First laptop upgraded from 14.04 -> 16.04 and no issue at all. Second laptop fresh install of 16.04. Any time I un-dock/re-dock the major freeze occurs. Only thing I can do is hardboot the laptop. Also noticing some tearing and flickering. -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs