Autologin no Debian

editar o arquivo /etc/lightdm/lightdm.conf

[Seat:*]

autologin-user=seu_nome_de_usuario

autologin-user-timeout=0

ou no terminal

Instale o pacote mingetty

You can enable the autologin by modifying the inittab file.

Using any editor Open the file inittab. I have used vim editor

#vim /etc/inittab

Serach for the line.

1:2345:respawn:/sbin/getty 38400 tty1

Replace with as follow

1:2345:respawn:/sbin/mingetty --autologin <user-name>  --noclear tty1

After modifying the inittab restart the system.

You can instead edit the file /lib/systemd/system/getty@.service and change the line

  ExecStart=-/sbin/agetty --noclear %I $TERM

to

  ExecStart=-/sbin/agetty --noclear -a root %I $TERM