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I have installed (via terminal) these packages (because my Gvim had a warning about libgail):

libgail-3-0
libevince3-3
libwebkitgtk-3.0-0
nautilus

(I wanted to re-install the first package, when removing it Ubuntu forced to remove the other 3, then I installed all them again)

After reboot, I can't login (after entering the password the screen refreshes again I enter the password and it hangs)

Can I solve the problem(s) with live CD without erasing all my data and install everything again?

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What happens if you do Ctrl + Alt + F1 to login? Will it let you? –  Mitch May 30 '12 at 5:41
    
Yes, it lets me to login. –  a-z May 30 '12 at 5:45

1 Answer 1

To reset everything to the way it was before you removed the applications, once you boot to recovery mode by pressing Ctrl+Alt+F1 enter you username and password, and then reinstall the Ubuntu-desktop meta package. Code:

sudo apt-get install --reinstall ubuntu-desktop

Then reboot with Code:

sudo reboot
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Can I reinstall from live CD?(older version) –  a-z May 30 '12 at 6:06
    
No , older CD of ubuntu not good for this , because 12.04 Ubuntu-desktop is differ to Ubutnu 11.10 . so the thing is you need 12.04 Live if you want to get it from a LIVE CD . –  AgentCool May 30 '12 at 6:28
    
The 12.04 on my computer is newer(updated) than my live CD(12.04). If it's good how can I reinstall with CD? Does this operation remove my data or it's just like a normal update? –  a-z May 30 '12 at 6:48

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