Question when you  get  some  issues  that  your Ubuntu cannot  start normally   but autologin still activated ,  (Gnome  Freezing) ? Solution: 1.Press, ctrl+alt+F1 to   get the  terminal 2. Log in3. sudo vi /etc/gdm/custom.conf4. changed AutomaticLoginEnable to false (you’ll have to press ‘i’ for insert)5. save (Esc -> :wq)6. sudo reboot You’ll see login screen … Continue reading How do I disable auto login in ubuntu