Is the package indicator-application installed ? Maybe you removed it by accident, check that.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager-applet in Ubuntu. https://bugs.launchpad.net/bugs/1401160 Title: nm-applet not shows icon at system tray in 14.10 Status in network-manager-applet package in Ubuntu: Confirmed Bug description: New installation of Ubuntu 14.10 Toshiba P50t nm-applet doesn't shows in system tray. > sudo nm-applet nm-applet-Message: using fallback from indicator to GtkStatusIcon (nm-applet:5573): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.42.1/./gobject/gsignal.c:3101: signal id '207' is invalid for instance '0x1c9bd40' ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: network-manager-gnome 0.9.8.8-0ubuntu7 ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7 Uname: Linux 3.16.0-25-generic x86_64 ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 CurrentDesktop: Unity Date: Wed Dec 10 16:53:34 2014 ExecutablePath: /usr/bin/nm-applet IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2014-11-29 (11 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) IpRoute: default via 192.168.123.1 dev wlan0 proto static 192.168.123.0/24 dev wlan0 proto kernel scope link src 192.168.123.107 metric 9 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ProcEnviron: LANGUAGE=es_ES PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=es_ES.UTF-8 SHELL=/bin/bash SourcePackage: network-manager-applet UpgradeStatus: No upgrade log present (probably fresh install) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH Conexión cableada 1 9685b027-3ddc-4cbd-a053-f3b85e4accf5 802-3-ethernet 1418226251 mié 10 dic 2014 16:44:11 CET yes no /org/freedesktop/NetworkManager/Settings/2 Asimov 1 39cc730a-8e30-4770-a603-429c600c678a 802-11-wireless 1418226551 mié 10 dic 2014 16:49:11 CET yes no /org/freedesktop/NetworkManager/Settings/1 Asimov db5db932-43c6-492b-b4b9-60da58a2c0c1 802-11-wireless 1418226190 mié 10 dic 2014 16:43:10 CET yes no /org/freedesktop/NetworkManager/Settings/0 nmcli-dev: DEVICE TYPE STATE DBUS-PATH eth0 802-3-ethernet unavailable /org/freedesktop/NetworkManager/Devices/1 wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/0 nmcli-nm: RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running 0.9.8.8 connected enabled enabled enabled enabled disabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1401160/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp