Bug#1107934: gdm3: disable-user-list=true stopped working after upgrade from bookworm to trixie

[Simon McVittie]

On Tue, 17 Jun 2025 at 20:09:28 +0200, Robert Jaeschke wrote:
>in bookworm I had successfully disabled the user list in the gdm login screen
>by following those instructions: https://help.gnome.org/admin/system-admin-
>guide/stable/login-userlist-disable.html.en
>
>After upgrading to trixie this no longer works.

In Debian, the preferred way to do the equivalent of what's in that 
guide is to edit /etc/gdm3/greeter.dconf-defaults, which already offers 
disable-user-list as a commented-out example.

(Unfortunately not all of the settings in 
/etc/gdm3/greeter.dconf-defaults are still functional - I already 
reported this as https://bugs.debian.org/1105057 - but I'm fairly sure 
disable-user-list does work.)

     smcv