All prose and instructions are up to par. Extra info needs to be provided on picture options, per comment below. --shaunm Matthias Clasen matthias.clasen@gmail.com 2012 Jana Svarova jana.svarova@gmail.com 2013 Petr Kovar pknbe@volny.cz 2014 David King davidk@gnome.org 2014 Ekaterina Gerasimova kittykat3756@gmail.com 2014 Change the default desktop background for all users. Set custom background

You can change the default desktop background to one that you want to use. For example, you may want to use a background with your company or university logo instead of the default GNOME background.

Set the default background

Create the key file /etc/dconf/db/local.d/00-background to provide information for the local database.

<file>/etc/dconf/db/local.d/00-background</file> # Specify the dconf path [org/gnome/desktop/background] # Specify the path to the desktop background image file picture-uri='file:///usr/local/share/backgrounds/wallpaper.jpg' # Specify one of the rendering options for the background image: picture-options='scaled' # Specify the left or top color when drawing gradients, or the solid color primary-color='000000' # Specify the right or bottom color when drawing gradients secondary-color='FFFFFF' shaunm

Provide information about the different picture-options values. Possibly also about when and how colors are used and what the gradient does.

To prevent the user from overriding these settings, create the file /etc/dconf/db/local.d/locks/background with the following content:

<file>/etc/dconf/db/local.d/locks/background</file> # Lock desktop background settings /org/gnome/desktop/background/picture-uri /org/gnome/desktop/background/picture-options /org/gnome/desktop/background/primary-color /org/gnome/desktop/background/secondary-color