Since last week shutdown has stopped working in my system. Either i use the shutdown menu in Unity/LightDM or use
sudo shutdown -h now the system just locks, and i can't either use Alt+reisub. Only a hard shutdown works.
If i shutdown from a tty, this is the last output i get before the system freezes:
umount: /run/lock: not munted umount: /run/shm: not mounted mount: / is busy * Will now halt [...] Power down.
After this the disk usage led turns on and i can't do anything else.
What could be the problem?
What i have tried
acpi=forcein GRUB doesn't help;
- check for errors in the shutdown process: i get any error at all during shutdown, except the lines stated on top;
- reboot/suspend works just fine!
As seen here i get some warnings regarding ACPI in