/usr/share/gdm/dconf/95-debian-edu-settings is in debian-edu-artwork 0.902-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | [org/gnome/login-screen]
logo='/usr/share/pixmaps/debian-edu-logo.svg'
fallback-logo='/usr/share/pixmaps/debian-edu-logo.svg'
|