I uninstalled Bumblebee, but now my video card is not working properly. I tried to update its video driver, but now I just got the message
An unresolvable problem occurred while initializing the package information. Please report this bug against the 'update-manager' package and include the following error message: 'E:Type 'ain' is not known on line 3 in source list /etc/apt/sources.list.d/bumblebee-stable-precise.list'
either when I try to update by terminal and also when I open the package manager.
I would be glad in having some help!