I was upgrading Ubuntu 11.10 to Ubuntu 12.04 and during this process I was using Google Chrome and some Nautilus windows and suddenly something came wrong (compiz or other package was updating…) X server wasn't responding. I had to restart my laptop because upgrading process wasn't going on. Since then Ubuntu doesn't stand up. After grub choise nothing shows (except blinking mouse pointer and purple background). I even can't switch to tty.
Enyone knows solution to that problem? How to repair this installation of Ubuntu. How get access to terminal (to diagnose, to check the system)?
Best Answer
In my case, after a crash during 11.10 to 12.04 upgrade, this command completed the upgrade:
, as suggested in https://askubuntu.com/a/122320.
About 600M of packages was downloaded and installed in the process.