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Please help me with this! I first tried to upgrade my Ubuntu server from 11.10 to 12.04 thru Upgrade Manager, but never succeeded! Then I tried upgrading thru terminal, which took me ~4 hours as I was warned. When I restarted my computer, my login GUI did not show up at all! (Panic I was!) But when I switched to tty6 and it seemed the upgrade has finished, at least partially and got message Ubuntu 12.04LTS and telling me 12.10 is available. There are bunch of unmet dependencies...."apt-get install -f" may resolve the problem. Then I tried: sudo apt-get -f install, did not succeed! Also I tried sudo apt-get update && sudo apt-get upgrade I got bunch of error message too long to list here.

Then I tried: sudo do-release-upgrade still bunch of error message there!

There seems a lot trouble with the upgrade from 11.10 to 12.04 for me. Did I miss anything? Anyway, can I ask how I can get the gnome login GUI back? Thanks a lot!

Yifang

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What error messages? –  psusi Dec 7 '12 at 3:49
    
A long list of errors. Most of them are libqt4 related, several are mysql and perl5.14 related. The frustrating thing is the machine can not be restarted and I do not know how to copy and paste the error message here! Also I have tried dpkg --configure -a, which did not solve the problem. Any suggestion? Thank you very much! –  Ivan Dec 8 '12 at 5:55
    
You can use the the pastebinit command to send the output to pastebin and get a url you can put here. sudo apt-get -f install | pastebinit –  psusi Dec 8 '12 at 21:50
    
I reinstalled mysql by aptitude install mysql-server-core-5.5, Ubuntu now is 12.04.1, there some errors that are quite different from what I had with libqt4 etc. Still blank screen but I can switch to tty1~tty6. The login GUI is still missing! Any help is appreciated! Ivan –  Ivan Dec 10 '12 at 22:04
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