This simple tutorial will show you how to boot your Ubuntu directly into text mode and log-in automatically without entering username/password by manual.
First make Ubuntu boot into text mode:
Hit Ctrl+Alt+T to launch a terminal window. Then edit /etc/default/grub with your favorite editor, for example:
sudo gedit /etc/default/grub
Find out this line:
change it into:
At next boot, your Ubuntu will directly boot into text mode, you can start graphical interface via this command:
Automatic login without username/password in text mode:
Add -a <your-user-name> to the line:
exec /sbin/getty -8 38400 tty1
in file /etc/init/tty1.conf
For example, auto login with user meilin:
exec /sbin/getty -8 38400 tty1 -a meilin
/etc/init/tty1.conf is the upstart job that runs at the appropriate time to start the terminal session on tty1. Adding the -a option tells getty to call the login program with the -f option to sign that user in, bypassing the user prompt from getty and the password prompt from login.