Echoed from: https://askubuntu.com/questions/508029/ubuntu-14-04-stuck-on-shutdown
- Press Ctrl+Alt+T to go to a terminal and type:
sudo gedit /etc/default/grub
This will open the grub config file. Change the line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force apm=power_off"
Then save & close it.
- Type in the same terminal:
sudo gedit /etc/modules
This will open the modules config, just add the following:
apm power_off=1
and save the file.
- Next type in the terminal:
sudo update-grub