Same issue, since upgrade to 16.04 the system has hung during reboot. The network isn't fully shutdown and responds to pings but sshd is stopped, the system reboots successfully if swap is disabled. Attempted to add reboot=force to grub, to no avail; only disabling swap fixed the issue.
Same issue, since upgrade to 16.04 the system has hung during reboot. The network isn't fully shutdown and responds to pings but sshd is stopped, the system reboots successfully if swap is disabled. Attempted to add reboot=force to grub, to no avail; only disabling swap fixed the issue.