How to change the desktop wallpaper that's part of a slideshow?

Solution 1:

--After installing wallch (from the software centre) you can safely remove the offending wallpaper.

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Wallch PPA Gnome3

Wallch PPA Gnome2

Linked Question:

  1. How do I create a desktop wallpaper slideshow?

Solution 2:

You can edit /usr/share/backgrounds/contest/background-1.xml file with gksudo gedit /usr/share/backgrounds/contest/background-1.xml and replace the entries that read /usr/share/backgrounds/Stalking_Ocelot_by_Sayantan_Chaudhuri.jpg with the path to a wallpaper that's something more pleasant to you.