I have discovered a new feature called Livepatch that keeps patching system between restarts. I am using Lubuntu 18.04.1 LTS. I went to the sign in button, and the "Choose an account" dialog appeared saying "To continue you need an Ubuntu Single Sign-on Account". I tried to press Sign in, but the button is disabled so it means that I can't sign in.
In my system, is there some packages related to Ubuntu Single Sign-on missing? Or is there something else wrong with it?
I am honestly running dual boot system in a 40GB Hard drive (Windows XP 30GB used for gaming and coding, Lubuntu 18.04 10GB used for other work). I am connected to WiFi.