This bug is triggered on my system by suspending - after waking up the system, nm doesn't show any connections / available networks even though I'm online.
nm version: $ apt-cache policy network-manager network-manager: Instalovaná verze: 1.2.0-0ubuntu0.16.04.2 Kandidát: 1.2.0-0ubuntu0.16.04.2 Tabulka verzí: *** 1.2.0-0ubuntu0.16.04.2 500 500 http://cz.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 100 /var/lib/dpkg/status 1.1.93-0ubuntu4 500 500 http://cz.archive.ubuntu.com/ubuntu xenial/main amd64 Packages related question on askubuntu: http://askubuntu.com/questions/762904 /network-manager-ubuntu-16-04-wifi-connected-no-wifi-networks-listed -- 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/1589073 Title: nm-applet not showing existing wifi connection Status in network-manager-applet package in Ubuntu: Incomplete Bug description: Frequently, not always, the wifi connection and the existing wifi networks don't show up on nm-applet. Still, the default network connection is established in the background. But nm-applet does not allow connection management. In the picture: nm-applet shows no connections/netowrks but in the connection information dialog you can confirm that the wifi connection was established ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: network-manager 1.1.93-0ubuntu4 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: Unity Date: Sat Jun 4 11:33:41 2016 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2016-05-16 (18 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) IpRoute: default via 192.168.1.254 dev wlp13s0 proto static metric 600 169.254.0.0/16 dev docker0 scope link metric 1000 linkdown 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown 192.168.1.0/24 dev wlp13s0 proto kernel scope link src 192.168.1.113 metric 600 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1589073/+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