Basically, I have a quad-monitor wallpaper that I want to stretch across all of my workspaces (1 monitor), I have compiz manager installed, but can't seem to get the single image to fill the entire cube. How should I go about this?
This could be accomplished by splitting the image into four different images and adding a different one on each desktop.
You could use a variety of different things to split the images. Using ImageMagick:
25% was used above based on a setup of four desktops. If you have a different number use 100/#ofDesktops
Now, setup the compiz plugin to use them: