It certainly did not happen in 4.4.0.36 (I presume this was the last one with 4.4).
I have reinstalled a fresh copy of Ubuntu 16.10. Here I upgraded to kernel 4.8.0-26. This is the kernel in question. As this is my main productive machine, I would rather not try an untested kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1636009 Title: Restart from GUI leads to system hangup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1636009/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs