I found a possible solution to this bug. It has something to do with the auto login function in the user management from Unity. When activated it cannot shutdown anymore. Also disable the auto login is not possible anymore.
What I did:
$sudo gedit /etc/lightdm/lightdm.conf
remove the line:
autologin-user= YOUR USERNAME
Restart your computer with:
$sudo shutdown -h now
After that I had a system that worked normally again.
I found a possible solution to this bug. It has something to do with the auto login function in the user management from Unity. When activated it cannot shutdown anymore. Also disable the auto login is not possible anymore.
What I did: lightdm. conf
$sudo gedit /etc/lightdm/
remove the line:
autologin-user= YOUR USERNAME
Restart your computer with:
$sudo shutdown -h now
After that I had a system that worked normally again.