I have a Dell PowerEdge T20 microserver running Ubuntu 16.04. Everything is working fine, except that it won't reboot cleanly.
When I issue run the reboot command, the last messages displayed are similar to these:
[ OK ] Reached targed Shutdown. [ 237137.043209] systemd-shutdown: Failed to initialize DM devices, ignoring
I've tried adding the following to /etc/default/grub (and running update-grub and rebooting), but it doesn't help:
The BIOS is up to date (version A06).
Can anyone suggest anything else I can try please?