Ubuntu – Indicator Applet: How to get rid of the clock

If you just want the messaging menu to hide you can blacklist all of the applications that are in it. You can do that by copying all the application links to your local black list directory. Here is the command line way to do that:

  mkdir -p ~/.config/indicators/messages/applications-blacklist
  cp /usr/share/indicators/messages/applications/* ~/.config/indicators/messages/applications-blacklist

The first time you create the blacklist directory you'll need to restart your session (log out and back in) and then the messaging menu should hide itself.

As long as you didn't tell the panel to "delete" the clock applet, you should be able to get it back with a simple restart of the gnome-panel itself. Just hit Alt-F2, then run :

killall gnome-panel

That will restart the panel and reload your clock.

If you've deleted the clock applet, you'll have to re-apply it. Right click on an empty area of your panel, right click and choose "Add to panel". Then find and choose the "Clock" applet, then hit the add button at the bottom.