Had the same problem, saved my installation doing the following: 1- after restart, when the computer stops booting, and there is nothing but a black screen with blinking white dash, press and hold together CTRL + ALT + F1 (to get to the console). 2- sudo dpkg --configure -a 3- after all the configuration, sudo halt.
This worked fine for me. -- sudo update-manager -c -d crashes during xubuntu upgrade https://launchpad.net/bugs/68027 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
