Comment 32 for bug 1594023

Same problem with a fresh install of Lubuntu 16.10. No problem at all with Lubuntu 16.04. I've tried a live Kubuntu 16.10: same problem. It seems to be a bug related to kernel 4.8, since live Fedora 24 (kernel 4.7) is fine but live beta Fedora 25 (kernel 4.8) doesn't shut down.

It seems that the computer (Dell Optiplex 9010 with SSD) is trying to access the disk after the line "Reached target shutdown", since it gives some errors like "ata1.00: exception Emask...", "ata1.00: failed command..." and the like. After a while, it prints "ata1: reset failed, giving up" and finally a "reboot: Power down" and then turn the power off (5 to 10 minutes after having printed the line "Reached target shutdown").