Our login screen requirements include a warning / disclaimer and a basic login, showing just a username and password field. Sadly, Gnome 3 seems to be ignoring the org.gnome.login-screen.disable-user-list
checkbox presented by dconf-editor
.
Can you disable the list of users displayed prior to login in Gnome 3 GDM?
Best Answer
gdm3 loads its configuration in its own dconf database. This is separate apparently from the user dconf db that is accessible from the GUI with dconf-editor.
To edit the key value pairs which control the gdm settings and the login screen create a custom file in the /etc/dconf/db/gdm.d and add the custom entries there.
Do the following as the root user:
Add the following:
[org/gnome/login-screen]
disable-user-list=true
Update the dconf database
dconf update
Restart gdm.
systemctl restart gdm
or
/etc/init.d/gdm restart
More details on this can be found on the gnome sysadmin FAQ.
https://live.gnome.org/SysAdminGuide