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I have the following system:

$ lsb_release -a
Distributor ID: Ubuntu
Description:    Ubuntu 17.10
Release:        17.10
Codename:       artful

$ gdm3 --version
GDM 3.26.1

I would like to disable the user list in GDM and enter my user name and password to log-in. I have already searched a lot but did not find any valuable solution.

How can I achieve this?

Videonauth
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Eike
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2 Answers2

8

This feature is currently bugged, see: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1724944 and mark yourself affected

You need to install the dconf-editor tool if you not have already:

sudo apt install dconf-editor

Then when you opened it navigate to:

/org/gnome/login-screen

and set the 'disable-user-list' button to 'on':

enter image description here

Since the above is still bugged, the only solution is right now via terminal edit the following lines in /etc/gdm3/greeter.dconf-defaults:

#[org/gnome/login-screen]
# disable-user-list=true

to:

[org/gnome/login-screen]
disable-user-list=true

Be sure to edit both lines otherwise you might crash your login completely.

Videonauth
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    Bug has a solution: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1724944/comments/7 for 17.04 and 17.10. For 18.04 you also need to uncomment [org/gnome/login-screen] if you do it your way. Only doing your uncomment crashes the login. – Rinzwind May 30 '18 at 08:53
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    @Rinzwind Thank you for that information, incorporated it into my answer. – Videonauth May 30 '18 at 10:34
1

One option:

Edit /usr/share/gdm/greeter.dconf-defaults and remove "#" to uncomment the line:

disable-user-list=true

Another option:

Use gconftool-2 or gconf-editor. Change this value to true:

/apps/gdm/simple-greeter/disable_user_list

Reference

https://help.gnome.org/admin/gdm/stable/configuration.html.en
https://mike632t.wordpress.com/2016/05/28/gnome-3-customizing-the-login-screen/#userlist

ravery
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    See comment made at the other post. You also need to uncomment [org/gnome/login-screen] if you do it your way. Only doing your uncomment crashes the login. – Rinzwind May 30 '18 at 08:54