You may already know that Ubuntu 12.10 misses “Wallpaper” plugin in Compiz, that means it is not available to enable the different wallpapers for each workspace feature. Now the plugin is back in Ubuntu 13.04 Raring Ringtail.
With the new plugin in Ubuntu 13.04 Compiz, you don’t need to disable the desktop. So that the desktop icons (Computer, Home Folder, Network, etc.) and desktop right-click menu are still available after enabled different wallpapers. I’ve tested in Ubuntu 13.04 Beta2, the only bug is that the desktop icons will be covered by the wallpapers you set.
To get started:
First hit Ctrl+Alt+T to open terminal for running commands. Install the required packages by:
sudo apt-get install compizconfig-settings-manager compiz-plugins-extra
Then launch CCSM from the Unity Dash:
Search “Wallpaper” plugin, enable it and click to go into its configuration page.
Under Backgrounds, click “New” button to add 4 wallpapers one by one. You’ll be prompt to enable “JPEG” plugin while doing this. Just enable it.
After that, click the “Workspace Switcher” icon (System Settings-> Appearances-> Behavior-> Enable Workspaces) on Unity Launcher to see the effect: