I installed Ubuntu 12.10 and at first when I go to check the system information I used to have (unknown) on the graphic card section, I used the synaptic manager and downloaded the fglrx, after that I restarted my laptop and now I don't have any menus, all of them are gone. Now I am only using the keyboard shortcuts to use Ubuntu. My graphic card is AMD ATI. What can I do to bring the menus back?