The problem started happening as soon as I did the (fresh) Ubuntu 16.04 install.
Previously, the computer had been running 14.04, and the computer would properly shut down as long as no USB medium (stick or disk) was connected when I initiated the shutdown. I got into the habit of disconnecting all USB media before shutting down, and never paid further attention to the issue. I saw this very same behaviour under a Debian release (could be 7 or 8) that was installed on the computer for a short while. Before 14.04, the computer had 10.04, and I don't remember having seen the problem in those days. I have already tested with v4.8-rc2 mainline build, and the problem persisted. Will try '-rc3' when I find the time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1618001 Title: My computer reboots instead of shutting down To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1618001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs