System tray notifications were just recently enabled in Ubuntu Unity. Unfortunately, the system tray option is not available for many applications and merely works with a few apps such as Mumble, java applications and Wine. In this post we will tell you how to enable system tray for all applications.
Open a Terminal window and enter the below command:
gsettings set com.canonical.Unity.Panel systray-whitelist "['all']"
After that, you can whitelist a certain application if you want, by using the command below. In the given command, make sure you replace “YOUR_APPLICATION”, with the applications name which you wish to add to the whitelist.
gsettings set com.canonical.Unity.Panel systray-whitelist "['JavaEmbeddedFrame', 'Mumble', 'Wine', 'Skype', 'hp-systray', 'YOUR_APPLICATION']"
Log out and login back for the changes to take effect.
Following the method above, you can add a number of applications to the whitelist to make sure that you are not deprived of the system tray notifications of your favorite apps.