tty1 auto login startx

auto login tty
http://a0726h77.blogspot.tw/2015/01/tty-auto-login.html

auto start X

$ vi ~/.bashrc

if [ -z "$DISPLAY" ] && [ $(tty) == /dev/tty1 ]; then
    startx
fi

References :
Debian User Forums • View topic - auto login and startx without a display manager - lenny