Have you changed something in your graphical configuration or installed a new graphic driver ?If yes
, try the following :
-1- Type Ctrl-Alt-F1
-2- Log in as normal user
-3- Restore the previous state of xorg.conf (with nano)
sudo nano /etc/X11/xorg.conf
-4- Save and close nano
-5- Type startx
, then press Enter
-6- Give us the information, especially the errors messages you get from Xorg. They are preceded by "(EE)".If no
, maybe your root partition is full.
What is the output of the following command ?