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My friend lent me her laptop and she followed some tutorial on how to switch the wallpaper in GDM2 but it didn't work and now it's stuck with some wallpaper I can't seem to get rid of, how do I reset GDMs config?

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up vote 4 down vote accepted

Open a gnome-terminal (Alt + F2gnome-terminal) and type the following:

  • To only reset the background:

    sudo -u gdm gconftool-2 --unset /desktop/gnome/background/picture_filename
  • To reset all of GDM's configuration:

    sudo -u gdm gconftool-2 --recursive-unset /

The second one will take a bit, both commands will ask you for your password.

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