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While upgrading Ubuntu 12.04 to 12.10 due to power failure, the desktop environment is not working. It shows 12.04 but no icons are there.

If I went through Ctrl+Alt+F1 it went into terminal in which my login ID and password is not working.

How one can solve this problem?

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Can you make the GRUB boot menu visible during boot? You can choose a "safe mode" from there. I believe you have to hold <kbd>SHIFT</kbd> during power up to enter the boot menu. – jippie Oct 24 '12 at 12:43

I am not sure if I understand your situation, did you reinstall 12.04 after the failed 12.04 to 12.10 upgrade?

I just installed 12.04 and have a desktop with invisible icons in the Unity Launcher. Still trying to resolve the issue, seems to be something with Unity 3D / compiz.

As a work around, you can try Unity 2D. At the login screen, right click the Ubuntu circle thing and select Ubuntu. Continue to login.

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