Since LightDM is near impossible to install I made a script to install it.
#!/bin/bash echo Please type in your password: sudo echo n y y && aptitude install lightdm sudo cp /etc/lightdm/lightdm.conf /etc/lightdm/lightdm.conf.old sudo /usr/lib/lightdm/lightdm-set-defaults --greeter unity-greeter dialog --yesno 'Do you want to reboot?' 7 50 && echo "Ok! Exiting..." || echo "Ok! Rebooting!" && sudo reboot
