Adam in my testing, GNOME Shell seems to work ok. ubuntu-gnome-default-settings sets org.gnome.settings-daemon.plugins.background active to true by default which looks needed, at least with the way we're packaging things in the GNOME3 PPA.
It looks like things break in Unity though if org.gnome.desktop.background show-desktop-icons is set to true.
As a workaround, run
gsettings set org.gnome.settings-daemon.plugins.background active true
gsettings set org.gnome.desktop.background show-desktop-icons true
This will disable icons on the desktop but changing the default wallpaper should work fine.
Adam in my testing, GNOME Shell seems to work ok. ubuntu- gnome-default- settings sets org.gnome. settings- daemon. plugins. background active to true by default which looks needed, at least with the way we're packaging things in the GNOME3 PPA.
It looks like things break in Unity though if org.gnome. desktop. background show-desktop-icons is set to true.
As a workaround, run
gsettings set org.gnome. settings- daemon. plugins. background active true desktop. background show-desktop-icons true
gsettings set org.gnome.
This will disable icons on the desktop but changing the default wallpaper should work fine.