This simple tutorial is going to show you an indicator applet which collects recent messages sent with libnotify to a notification daemon and displays recent notifications in system tray area.
Install Recent Notifications indicator in Ubuntu 12.04 & 11.10:
To get this indicator, hit Ctrl+Alt+T to open a terminal window, copy and paste this command into terminal and hit enter to add PPA:
There’s an app indicator called indicator-sensors for monitoring hardware temperatures on Ubuntu 12.04 Unity’s panel. The indicator displays the temperatures of CPU, video card, hard disk and also cpu fan speed.
Install indicator-sensors in Ubuntu 12.04
You can install this indicator from the developer Alex Murray’s ppa.
So I'm having a problem with the Sound Indicator and RhythmBox. Basically what happens is RhythmBox's Play, Pause, Forward, and Backward buttons don't work and the whole RhythmBox section of the indicator freezes and looks like this
The rest of the indicator is fine however. The mute button, the volume slider, and the sound settings button all function correctly.