I recently upgraded to 13.04 but now my wallpaper is missing, I only have a white background although everything seems to be working (icons, etc.). I tried to change the "Have file manager handle the desktop" on Tweak Tool and directly in gconf with success.
gsettings set org.gnome.desktop.background show-desktop-icons false
The only time I see the configured wallpaper is when the screen is locked.
