I would like to disable the auto login.
I have allegedly disabled it by going to
System -> Control Center
and under Administration I clicked on
Users and Groups -> -> Change button (next to the password)
and then I clicked on the radio button labeled Don't ask for password on login.
However, I still get a pop up window showing my name and a "Log in" button
to press to full boot into the GUI. How can I get rid of this window and button?
Again, I am using Ubuntu Mate 16.04 on a Raspberry Pi 3.
Thank you ahead of time for anyone who can successfully help me through this.