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[Hans Deragon <hans@xxxxxxxxxxx>]

I have this problem in Ubuntu 14.04 LTS Trusty Thar.  I have a Lenovo
W510 laptop.  Could it be that this problem occurs with only a certain
type of hardware?  After all, not everybody using Ubuntu has this
problem.

My hardware is:  03:00.0 Network controller: Intel Corporation Centrino
Ultimate-N 6300 (rev 35)

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https://bugs.launchpad.net/bugs/1390709

Title:
  Wifi doesn't reconnect after waking from sleep

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  Upgraded from 14.04 to 14.10. Before Wifi would reconnect after waking
  up from sleep mode. After Update reconnect fails with wlan0: aborting
  authentication with 1c:c6:3c:95:e7:74 by local choice (Reason:
  3=DEAUTH_LEAVING).

  I worked around this by killing wpa_supplicant with a script in
  /etc/pm/sleep.d

  
  #!/bin/sh

  case "$1" in
          thaw|resume) 
                  { killall wpa_supplicant ; } 2>/dev/null
                  ;;
          *)
                  ;;
  esac

  exit $?

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: network-manager 0.9.8.8-0ubuntu28
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  Uname: Linux 3.16.0-24-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Sat Nov  8 11:43:15 2014
  EcryptfsInUse: Yes
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2013-04-19 (567 days ago)
  InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130402.1)
  IpRoute:
   default via 192.168.138.251 dev wlan0  proto static 
   192.168.122.0/24 dev virbr0  proto kernel  scope link  src 192.168.122.1 
   192.168.138.0/24 dev wlan0  proto kernel  scope link  src 192.168.138.143  metric 9
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  SourcePackage: network-manager
  UpgradeStatus: Upgraded to utopic on 2014-11-07 (0 days ago)
  nmcli-nm:
   RUNNING         VERSION    STATE           NET-ENABLED   WIFI-HARDWARE   WIFI       WWAN-HARDWARE   WWAN      
   running         0.9.8.8    connected       enabled       enabled         enabled    enabled         enabled

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