Xubuntu. Wireless network disappears!

You can start the icon in the bar manually in a terminal by:

sudo nm-applet

Install the packages from the terminal:

sudo apt-get install network-manager network-manager-gnome

Go to Settings>Autostarted Applications:
- click '+ Add'
- type in these values:
- name = 'network applet'
- command = 'nm-applet --sm-disable &'