#– Add following lines into 50-unity-greeter.conf –#
$ sudo vi /etc/lightdm/lightdm.conf.d/50-unity-greeter.conf
allow-guest=false
greeter-show-remote-login=false
#– reboot machine –#
$ sudo reboot
#– Add following lines into 50-unity-greeter.conf –#
$ sudo vi /etc/lightdm/lightdm.conf.d/50-unity-greeter.conf
allow-guest=false
greeter-show-remote-login=false
#– reboot machine –#
$ sudo reboot