I can confirm that this still happens in the kernel from -proposed, although it's possible it's less frequent (not sure about that, I may be mistaken). I've added the appropriate tag back to the bug.
** Tags added: kernel-fixed-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1575334 Title: Docking thinkpad laptop causes a complete system freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575334/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs