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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)?

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Boot a live system from CD or USB drive and mount your hard drive(s). Then you can fix the system or restore your backup that you were advised to make before a major system upgrade. – Marco May 4 '12 at 15:47
The exact same thing happened to me just now. Doing the dist-upgrade trick right now. Let's wait and see if that works... – Arne yesterday

2 Answers

up vote 3 down vote

In my case, after a crash during 11.10 to 12.04 upgrade, this command completed the upgrade:

sudo apt-get -f dist-upgrade

, as suggested in http://askubuntu.com/a/122320.

About 600M of packages was downloaded and installed in the process.

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up vote 1 down vote

Try using the Ubuntu LiveCD Recovery Mode. It gives you exactly what you need for repairing the system.

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