I have been searching for a good way to create a wallpaper slideshow. On Ubuntu 11.04 it was an easy job to make one using CreBS but CreBS doesn’t work on Ubuntu 11.10. And Wallch will only work with the program running, as soon as you close Wallch the slideshow stops working. Ubuntu 11.10 comes with a slideshow called Contest and the xml file is located in the /usr/share/backgrounds/contest folder. For some reason Ubuntu 11.10 doesn’t allow you to set your own .xml file as a background anymore.
To make any changes to the xml file open a terminal window (press Ctrl+Alt+T) and copy+paste the following line:
sudo gedit /usr/share/backgrounds/contest/background-1.xml
When the file is open all you need to do is to replace the file locations with the locations of the images you want to use. To make any changes to the time a wallpaper is shown you can change the duration settings.
When you are done you can save and close the file and close the terminal window. To enable the slideshow press the SuperKey and type: appearance and select the Contest wallpaper slideshow.
Edited .xml file