Setting Session Defaults
The following table lists the files that contain default
session information:
To set default session details for all users, modify the default session
file.
To restore the default session settings for a user, delete the session
file from the home directory of the user. If no user session file is present,
the default settings in /usr/share/gnome/default.session
are used.
To save the current session as the default session, users can run the gnome-session-save command.