What you need to do is edit /etc/xdg/autostart/nm-applet.desktop with your favorite text editor as admin. Go down to the Exec line and change the entry from nm-applet to dbus-launch nm-applet. Go to the NoDisplay=true line and change to NoDisplay=false. Save the file and reboot!
from http://askubuntu.com/questions/449658/networkmanager-tray-nm- applet-is-gone-after-upgrade-to-14-04-trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1302462 Title: network icon disappeared in xubuntu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-panel/+bug/1302462/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs