network-manager not finding any wifi network

[fcole90]

Sometimes network-manager stops finding any wifi network. I'm still investigating in what circumstances does it happen. The last time it happened after logging out and back in (switching optimus GPU).

Workaround:
sudo service network-manager restart

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: network-manager 1.1.93-0ubuntu4
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Apr 22 08:49:03 2016
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-03-21 (397 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150321)
IpRoute:
 default via 192.168.1.1 dev wlan0 proto static metric 600
 10.0.3.0/24 dev lxcbr0 proto kernel scope link src 10.0.3.1
 169.254.0.0/16 dev lxcbr0 scope link metric 1000
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.106 metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 lxcbr0 bridge connected /org/freedesktop/NetworkManager/Devices/0 lxcbr0 7fd1e377-d0ea-4999-b2a6-5011fe4cfa3b /org/freedesktop/NetworkManager/ActiveConnection/0
 wlan0 wifi connected /org/freedesktop/NetworkManager/Devices/1 GONNESA e19c4e31-7de8-4c0d-a7db-47d4b59a55c8 /org/freedesktop/NetworkManager/ActiveConnection/1
 eth0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/2 -- -- --
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/3 -- -- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

[Dragon Ball (dragonballz2k)]

when that bug happens to you does it think it's on Ethernet connection? I have to keep to restarting network-manager to see the wifi network list.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.