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I'm running 12.04 LTS, and as usual when the package manager prompts me to update I do it. I updated last night (Sept. 27) and now the system boots only into command line mode.

Before doing so I see the purple screen with the words "ubuntu 12.04" and the little dots going bright and dark, and then bam I'm in command line. I've tried using sudo apt-get to update my files, in case it was incomplete, and it tells me that everything is up to date. If I type the command "unity" I get a "fatal error" related to "no display variable set".

I have seen other questions and answers on this topic but I do not understand the answers provided. I am stuck. All I did was upgrade when the system told me to, what did I do wrong? I did not download any new video drivers lately.

Bill Sherman
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1 Answers1

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Thanks everyone. Using Ctrl-Alt-F1 to get to a TTY, I was able to run various apt-get commands to purge and reinstall my drivers completely, as seen in similar questions here on the site. My login credentials were broken as well so deleting my .Xauthority file allowed it to refresh and I'm OK now.

Bill Sherman
  • 31