no launcher or top menu bar on ubuntu 12.04 cannot also access the terminal after upgrade

Asked by Tonyt

no launcher or top menu bar on ubuntu 12.04 also cannot also access the terminal software upgrade

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Sam_ (and-sam) said :
#1

Try ctrl+alt+del to logout-in.

Or login to virtual terminal: ctrl+alt+f1
After authentication enter:
sudo reboot

If you stuck on any session the above shortcuts should help as workaround.

On login manager select Ubuntu or Unity-2d.

Options to reset Unity and Compiz.
http://askubuntu.com/questions/38579/how-do-i-restart-an-unity-session-from-the-terminal/38597#38597
https://answers.launchpad.net/ubuntu/+source/compizconfig-settings-manager/+question/177251

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