Public bug reported:

Ubuntu 16.10 on Dell XPS 13 9350 (Skylake) with Intel 8260 wifi card.
When resuming after supsend, network manager does reconnect to the last
wifi but does not show this in the tray icon. Also the menu underneath
the icon does not list any wifi networks anymore.

A

  sudo service network-manager restart

solves the issue most of the times, but not always.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: network-manager 1.2.4-0ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-27.29-generic 4.8.1
Uname: Linux 4.8.0-27-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Nov 27 20:20:54 2016
EcryptfsInUse: Yes
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2016-07-30 (120 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IpRoute:
 default via 192.168.123.205 dev wlp58s0  proto static  metric 600 
 169.254.0.0/16 dev virbr0  scope link  metric 1000 linkdown 
 192.168.122.0/24 dev virbr0  proto kernel  scope link  src 192.168.122.1 
linkdown 
 192.168.123.0/24 dev wlp58s0  proto kernel  scope link  src 192.168.123.15  
metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to yakkety on 2016-10-30 (27 days ago)
nmcli-dev:
 DEVICE      TYPE      STATE      DBUS-PATH                                  
CONNECTION   CON-UUID                              CON-PATH                     
                      
 virbr0      bridge    connected  /org/freedesktop/NetworkManager/Devices/2  
virbr0       d2763510-7dbd-4709-8cfb-13ca051bd89c  
/org/freedesktop/NetworkManager/ActiveConnection/0 
 wlp58s0     wifi      connected  /org/freedesktop/NetworkManager/Devices/0  
Hinkelstein  56ef853c-a09e-4e0a-b40e-7905402cb6a4  
/org/freedesktop/NetworkManager/ActiveConnection/3 
 lo          loopback  unmanaged  /org/freedesktop/NetworkManager/Devices/1  -- 
          --                                    --                              
                   
 virbr0-nic  tun       unmanaged  /org/freedesktop/NetworkManager/Devices/3  -- 
          --                                    --
nmcli-nm:
 RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  WIFI  
   WWAN-HW  WWAN    
 running  1.2.4    connected  started  full          enabled     enabled  
enabled  enabled  enabled

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug yakkety

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https://bugs.launchpad.net/bugs/1645130

Title:
  Network manager showing no list of wifi networks after resume from
  suspend

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