Public bug reported:

I'm using an Ubuntu OEM image on the Dell Precision 5510. After unboxing
and applying all updates (running apt-get update/upgrade multiple
times), if I suspend the system, when it comes back, networking shows as
"disabled". The network interfaces however are still up. Once I kill the
NetworkManager process, networking comes back.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: network-manager 0.9.8.8-0ubuntu7.2
ProcVersionSignature: Ubuntu 3.19.0-33.38~14.04.1-generic 3.19.8-ckt7
Uname: Linux 3.19.0-33-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 26 11:43:28 2016
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-osp1-20150721-1
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2016-02-25 (1 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 
20150721-23:28
IpRoute:
 default via 172.24.64.1 dev wlan0  proto static 
 172.24.64.0/19 dev wlan0  proto kernel  scope link  src 172.24.67.197  metric 9
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
 NAME                      UUID                                   TYPE          
    TIMESTAMP    TIMESTAMP-REAL                     AUTOCONNECT   READONLY   
DBUS-PATH                                 
 sfo3                      aa8c189d-e8dd-429b-948f-025579dfbe33   
802-11-wireless   1456515772   Fri 26 Feb 2016 11:42:52 AM PST    yes           
no         /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
 DEVICE     TYPE              STATE         DBUS-PATH                           
       
 wlan0      802-11-wireless   connected     
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING         VERSION    STATE           NET-ENABLED   WIFI-HARDWARE   WIFI  
     WWAN-HARDWARE   WWAN      
 running         0.9.8.8    connected       enabled       enabled         
enabled    enabled         disabled

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


** Tags: amd64 apport-bug trusty

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https://bugs.launchpad.net/bugs/1550490

Title:
  network-manager unresponsive after suspend

Status in network-manager package in Ubuntu:
  New

Bug description:
  I'm using an Ubuntu OEM image on the Dell Precision 5510. After
  unboxing and applying all updates (running apt-get update/upgrade
  multiple times), if I suspend the system, when it comes back,
  networking shows as "disabled". The network interfaces however are
  still up. Once I kill the NetworkManager process, networking comes
  back.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: network-manager 0.9.8.8-0ubuntu7.2
  ProcVersionSignature: Ubuntu 3.19.0-33.38~14.04.1-generic 3.19.8-ckt7
  Uname: Linux 3.19.0-33-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Feb 26 11:43:28 2016
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see 
http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-trusty-amd64-osp1-20150721-1
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2016-02-25 (1 days ago)
  InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 
20150721-23:28
  IpRoute:
   default via 172.24.64.1 dev wlan0  proto static 
   172.24.64.0/19 dev wlan0  proto kernel  scope link  src 172.24.67.197  
metric 9
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-con:
   NAME                      UUID                                   TYPE        
      TIMESTAMP    TIMESTAMP-REAL                     AUTOCONNECT   READONLY   
DBUS-PATH                                 
   sfo3                      aa8c189d-e8dd-429b-948f-025579dfbe33   
802-11-wireless   1456515772   Fri 26 Feb 2016 11:42:52 AM PST    yes           
no         /org/freedesktop/NetworkManager/Settings/0
  nmcli-dev:
   DEVICE     TYPE              STATE         DBUS-PATH                         
         
   wlan0      802-11-wireless   connected     
/org/freedesktop/NetworkManager/Devices/0
  nmcli-nm:
   RUNNING         VERSION    STATE           NET-ENABLED   WIFI-HARDWARE   
WIFI       WWAN-HARDWARE   WWAN      
   running         0.9.8.8    connected       enabled       enabled         
enabled    enabled         disabled

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