I installed Ubuntu 11.04 on my new HP Pavillion g6 laptop. Unity was running from the liveCD. However, when I installed it, it wouldn't work. I logged in using Ubuntu Classic, and installed the proprietary graphics driver, hoping this would make it work, but it didn't.
Choosing "ubuntu" or "ubuntu classic" from the login screen yields to the same thing: gnome2 without unity.
How do I enable Unity?