gsettings set com.canonical.Unity.Panel systray-whitelist "['all']"
See http://blog.ubuntusoft.com/solve-the-ubuntu-unity-system-tray-does-not-display-images-that-are-part-of-the-program.html
gsettings set com.canonical.Unity.Panel systray-whitelist "['all']"
See http://blog.ubuntusoft.com/solve-the-ubuntu-unity-system-tray-does-not-display-images-that-are-part-of-the-program.html