How to view/hide unity panel icons
Now hit the ALT+F2 key combination and type dconf-editor. Click the Dconf-editor icon. When the "Configuration Editor" window appears go to "desktop -> unity -> panel", click the value line on the systray-whitelist option and replace everything on that line with 'all'. Log out and log back in. See the below screenshot, we now have Pidgin on system tray, yes!
volume control for alsamixer
Now hit the ALT+F2 key combination and type dconf-editor. Click the Dconf-editor icon. When the "Configuration Editor" window appears go to "desktop -> unity -> panel", click the value line on the systray-whitelist option and replace everything on that line with 'all'. Log out and log back in. See the below screenshot, we now have Pidgin on system tray, yes!
volume control for alsamixer
1. set volumeicon (apt-get install before volumeicon) in startup $gnome-session-properties
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