====== Toggling between graphics and terminal mode ======


The Ubuntu system by default displays the login in graphics mode. 

But sometimes, as a user you cannot log in.

The best way to solve the problem is to enter the terminal mode by entering : ''CTRL+ALT+F1''.

A terminal prompt will appear, no graphics if available.

To go back to the graphics mode  you can just enter : ''CTRL+ALT+F7'' or F8