reactivating network after suspend has no effect

[Karl-Philipp Richter]

I can click on the checkbox menu item "Activate network" and the checkbox changes the state, but the change doesn't have any effect, i.e. the list of available managed network interfaces isn't displayed. The checkbox menu item for wireless network isn't displayed at all. This seems to happen after suspend and wake up from suspend only.

Seems to be similar to https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1129076 which is for 12.10.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: network-manager-gnome 0.9.10.1-0ubuntu7
ProcVersionSignature: Ubuntu 4.2.0-29.34-generic 4.2.8-ckt3
Uname: Linux 4.2.0-29-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Feb 14 16:13:05 2016
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2013-10-17 (849 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
IpRoute:
 default via 192.168.179.1 dev eth2 proto static metric 100
 169.254.0.0/16 dev eth2 scope link metric 1000
 192.168.179.0/24 dev eth2 proto kernel scope link src 192.168.179.2 metric 100
SourcePackage: network-manager-applet
UpgradeStatus: Upgraded to wily on 2015-11-19 (87 days ago)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 eth2 ethernet connected /org/freedesktop/NetworkManager/Devices/1 Kabelnetzwerkverbindung 1 14a92e99-9d98-4fff-b208-7716d88c2409 /org/freedesktop/NetworkManager/ActiveConnection/0
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- --
 wlan0 wifi unmanaged /org/freedesktop/NetworkManager/Devices/2 -- -- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.