It seems that it's related specifically to the nvidia driver since after downgrading from nvidia 185 to nvidia 180 all this came back to work normally
-- kdm starts well but it crashes when trying to restart https://bugs.launchpad.net/bugs/400515 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-180 in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp