Create a Slideshow Background (CreBS) is based application programming language Python / GTK is used to create and manage desktop wallpaper slideshow for the GNOME desktop. available for all platforms Linux distributions. Images that have been set is stored along with the wallpaper that you normally so it can be reselected in the future from a standard Appearance Preferences window.
How to install crebs on ubuntu
on terminal type :
sudo add-apt-repository ppa:crebs/ppa sudo apt-get update sudo apt-get install crebs