Hello Linux Geeksters.
In this article I will show you how to enable root login in LightDM, on Ubuntu 13.04.
By default, the Ubuntu Operating Systems have the root user disable by default, for security reasons. Ubuntu tries to teach its users to use the root priviledges only when they need them.
To enable the root login on Ubuntu 13.04, do this:
Enable the root accout, by setting it a password:
$ sudo passwd root
Type the root password twice.
Configure LightDM to allow root login:
$ sudo su
# echo 'greeter-show-manual-login=true' >> /etc/lightdm/lightdm.conf
Reboot and you are done.
To disable the root account again, do:
$ sudo passwd -l root