Same on a Dell latitude 5580 with Intel Corporation Device 24fd (rev 78)

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https://bugs.launchpad.net/bugs/1653324

Title:
  No wireless networks visible on resume from suspend. Erroneous Wired
  connection icon in nm-applet

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  As others have reported this I just woke my Thinkpad 450 to find no
  network. I resolved this by manually reconnecting with "nmcli c up id
  <network_name>" where <network_name> was taken from the output of
  "nmcli c" on the same machine.

  Steps to reproduce:-

  This is an intermittent issue which for me happens once in a while,
  but not super often to be annoying. For others it appears to happen
  often. I suspend my laptop multiple times daily and don't see this
  more than once per couple of weeks, or sometimes once a month.

  * Use laptop in one location on wifi
  * Suspend (shut lid) laptop
  * Resume (open lid) in same location (so same wifi networks nearby)

  Expected behaviour:-

  * Network come back up

  Actual behaviour:-

  * No network connectivity
  * nm-applet icon shows the two arrows as if a wired connection is made
  * No or few wireless erroneous wireless networks shown nearby

  * Workaround 1 (reconnect from command line)

  nmcli c

  (lists wireless networks, look for yours in the "NAME" column, use it
  in command below)

  nmcli c up id NAME

  * Workaround 2 (restart entire network stack)

  This AskUbuntu question has one solution
  http://askubuntu.com/questions/761180/wifi-doesnt-work-after-suspend-
  after-16-04-upgrade#761220

  Further information:-

  Output of nmcli m while suspending and resuming:-

  alan@gort:~$ nmcli m
  Connectivity is now 'none'
  Networkmanager is now in the 'asleep' state
  enp0s25: unmanaged
  wlp3s0: unmanaged
  Connectivity is now 'full'
  Networkmanager is now in the 'connected (local only)' state
  enp0s25: unavailable
  wlp3s0: unavailable
  wlp3s0: disconnected

  Output of nmcli after using workaround 1 above:-

  popey_2.4g_bed: connection profile changed
  Connectivity is now 'none'
  Networkmanager is now in the 'connecting' state
  wlp3s0: connecting (configuring)
  wlp3s0: using connection 'popey_2.4g_bed'
  wlp3s0: connecting (getting IP configuration)
  Connectivity is now 'full'
  'popey_2.4g_bed' is now the primary connection
  Networkmanager is now in the 'connected' state
  wlp3s0: connected
  popey_2.4g_bed: connection profile changed

  Hardware info:-

  Thinkpad T450
  alan@gort:~$ lspci | grep -i net
  00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (3) 
I218-LM (rev 03)
  03:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59)
  alan@gort:~$ uptime
   05:31:54 up 2 days, 18:03,  7 users,  load average: 0.34, 0.94, 1.04

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: network-manager 1.2.2-0ubuntu0.16.04.3
  ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
  Uname: Linux 4.4.0-57-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.4
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Dec 31 05:38:47 2016
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2016-04-27 (247 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  IpRoute:
   default via 192.168.1.1 dev wlp3s0  proto static  metric 600 
   10.0.3.0/24 dev lxcbr0  proto kernel  scope link  src 10.0.3.1 linkdown 
   10.235.160.0/24 dev lxdbr0  proto kernel  scope link  src 10.235.160.1 
linkdown 
   172.17.0.0/16 dev docker0  proto kernel  scope link  src 172.17.0.1 linkdown 
   192.168.1.0/24 dev wlp3s0  proto kernel  scope link  src 192.168.1.95  
metric 600
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-nm:
   RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  
WIFI     WWAN-HW  WWAN    
   running  1.2.2    connected  started  full          enabled     enabled  
enabled  enabled  enabled

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