Panel and Launcher are missing in Ubuntu 13.04 [duplicate]

i have upgraded Ubuntu desktop from 12.10 to 13.04. Since then I can't see the Panel or Launcher, but I'm able to open the terminal using the keyboard shortcut Ctrl+Alt+T.

When I use the Guest login there is no such problem. I am facing the problem only with administrator account. I have tried this Launcher, top Panel, and window decorations missing after 12.04 upgrade, but I couldn't find the result.

This worked for me:

dconf reset -f /org/compiz/ 

then enter:

unity --reset-icons &disown

Try deleting ~/.cache or~/.gconf. Realize however that if you made any edits to the system using dconf (or gconf)-editor, they will be reset.

Another alternative is to also delete ~/.config but that would reset any and all application preferences throughout Ubuntu for your user.

See also: Resetting Unity on 12.10 or 13.04

try this:

sudo apt-get purge fglrx lightdm && sudo apt-get install lightdm ubuntu-desktop

and then reboot