Dual wallpaper tools on linux?

Operating Systems & Open Source Linux
1

I want to have two different wallpapers displayed on my two monitors. Is there a tool, (or better yet a command) that can accomplish this?

Running Debian 8

2

I know if you use feh you just have to define the display you are applying the wallpaper to.

DISPLAY=:0.1 feh --bg-scale /path/to/wallpaper
3

Nitrogen, has a GUI, does its job.

4

I'm not a very experience Linux user, I install feh, couldn't get it to work.
Then I installed nitrogen just fine, but I can't get it to apply the wallpaper. Upon further exploration, I found that the problem is "Gtk-Message: Failed to load module "canberra-gtk-module"". I don't know exactly what that is.

5

I also got this when updating after modifying my /etc/sources.list file.
W: GPG error: http://ppa.launchpad.net intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EE6F9258A958418A