Michael Hill
mdhillca@gmail.com 2012
David King
amigadave@amigadave.com 2014
Petr Kovar
pknbe@volny.cz 2014
Make users type in their username on the login screen.

# Disable the user list

You can disable the user list shown on the login screen by setting the org.gnome.login-screen.disable-user-list GSettings key.

When the user list is disabled, users need to type their user name and password at the prompt to log in.

# Set the org.gnome.login-screen.disable-user-list key

Create a gdm keyfile for machine-wide settings in /etc/dconf/db/gdm.d/00-login-screen:

[org/gnome/login-screen] # Do not show the user list disable-user-list=true