*** This bug is a duplicate of bug 1574347 ***
    https://bugs.launchpad.net/bugs/1574347

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

** Changed in: network-manager (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1580256

Title:
  Wifi connections not available after system startup

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  After system startup, in some cases (it seems randomly), network-manager does 
not show any connections available (empty list of networks in systray icon 
menu). If i press "configure connections" button, connections editor shows two 
connections, but it is not possible to activate any of them. Connections are 
called as "wired connection 1" and "Wired connection 2". If i go to connection 
settings, i can see that one of them is configured to use my ethernet cable 
interface  enp0s25 (i usually have no ethernet cable attached), and another is 
configured to use my wifi interface wlp4s0. So it seems that problem is that 
for some reason network-manager "thinks" that my wireless interface is wired, 
and so does not even try to connect to any wifi network.
  If I do sudo service network-manager restart, all becomes ok, network-manager 
immediately sees my wifi network and connects to it. But having to manual 
restart of service right after system startup indicates that something is very 
wrong.

  This is newly installed Kubuntu 16.04 with latest updates.

  What I tried to do:
  * edit NetworkManager.conf to set [ifupdown] managed = true. No changes in 
behaivour at all.
  * remove and install again network-manager package. For some time I thought 
that resolved the problem, but after few days it reproduced again.
  * plug ethernet cable, connect to wired network, unplug cable. No results.

  dmesg | grep wifi output:

  [    3.693651] iwlwifi 0000:04:00.0: Direct firmware load for 
iwlwifi-7260-17.ucode failed with error -2
  [    3.706221] iwlwifi 0000:04:00.0: loaded firmware version 16.242414.0 
op_mode iwlmvm
  [    3.749453] iwlwifi 0000:04:00.0: Detected Intel(R) Wireless N 7260, 
REV=0x144
  [    3.749526] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [    3.749782] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [    3.965973] iwlwifi 0000:04:00.0 wlp4s0: renamed from wlan0
  [    4.329538] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [    4.330033] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [    4.535001] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [    4.535266] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [  122.272761] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [  122.273048] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [  122.470381] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
  [  122.470640] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled

  Please ask if you need me to attach any other logs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: network-manager 1.1.93-0ubuntu4
  ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Tue May 10 21:23:27 2016
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2016-04-30 (9 days ago)
  InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  IpRoute:
   default via 192.168.1.1 dev wlp4s0  proto static  metric 600 
   169.254.0.0/16 dev wlp4s0  scope link  metric 1000 
   192.168.1.0/24 dev wlp4s0  proto kernel  scope link  src 192.168.1.107  
metric 600
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.NetworkManager.NetworkManager.conf: 
2016-05-08T12:50:46.588618
  nmcli-con:
   NAME                    UUID                                  TYPE           
  TIMESTAMP   TIMESTAMP-REAL           AUTOCONNECT  AUTOCONNECT-PRIORITY  
READONLY  DBUS-PATH                                   ACTIVE  DEVICE  STATE     
 ACTIVE-PATH                                        
   tplink-portnov 1        fdff901c-5deb-4104-ba4d-c555e4b81d7c  
802-11-wireless  1462897338  Вт 10 май 2016 21:22:18  yes          0            
         no        /org/freedesktop/NetworkManager/Settings/0  yes     wlp4s0  
activated  /org/freedesktop/NetworkManager/ActiveConnection/0 
   Проводное соединение 1  08666419-d8c4-4c5f-911a-de123d44ec3a  802-3-ethernet 
  0           never                    yes          0                     no    
    /org/freedesktop/NetworkManager/Settings/1  no      --      --         --
  nmcli-dev:
   DEVICE   TYPE      STATE        DBUS-PATH                                  
CONNECTION        CON-UUID                              CON-PATH                
                           
   wlp4s0   wifi      connected    /org/freedesktop/NetworkManager/Devices/1  
tplink-portnov 1  fdff901c-5deb-4104-ba4d-c555e4b81d7c  
/org/freedesktop/NetworkManager/ActiveConnection/0 
   enp0s25  ethernet  unavailable  /org/freedesktop/NetworkManager/Devices/2  
--                --                                    --                      
                           
   lo       loopback  unmanaged    /org/freedesktop/NetworkManager/Devices/0  
--                --                                    --
  nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 
2: Error: Object 'nm' is unknown, try 'nmcli help'.

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