I ended up choosing gdm as my login manager during my upgrade from 12.04 to 12.10. Now all I have is the boring default gray gdm login. How can I change it back?
First go in terminal and make
Use arrow keys (↑ and ↓) and Enter in the menu that appear in terminal to select
Then go in tty1 by pressing Ctrl+Alt+F1 and run next two commands: