If you have a lot of indicator panel on ubuntu, you might find some of the indicator panel is not load properly or display wrong information, so you might want to refresh the indicator panel on ubuntu.
Is there a way to refresh the indicator panel on ubuntu without restarting the computer? lucky for you there is a special command for refreshing the indicator panel on ubuntu.
You can open command line and then run this to refresh the indicator panel, all of them will be refresh.
If you run the command above you will see the result immediately, the panel indicators will blink, that means it is has been refresh.
You can also refresh individual panel, you just need to know the name of the indicator, for example you want to refresh the sound panel, then you do like this:
You need to know exactly the name of the indicator service if you want to restart individually, read here for more info.