how to make skype 4 tray icon visible in ubuntu 12.10

i think many of ubuntu/unity users experienced the problem of skype icon visibility in the notification panel. today i will show you how to make visible the skype icon.

by default ubuntu/unity project allows several applications to be visible in the notification panel.  if you want to get the list of that applications which are defined in the "white list" try to execute the following command in the terminal.

gsettings get com.canonical.Unity.Panel systray-whitelist

you should get something like this:

['JavaEmbeddedFrame', 'Wine', 'Update-notifier']

these are the application names which are allowed to be visible in the notification panel. 

so to solve the problem with skype icon we should inject skype application name to this list. don't hurry to close opened terminal window and type this command

gsettings set com.canonical.Unity.Panel systray-whitelist "['JavaEmbeddedFrame', 'Wine', 'Update-notifier', 'Skype']"

after that quit  skype application if it was running and start it again. boom... you should see the icon.