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[Bug 1441893] [NEW] Can't connect to my wi-fi: authentication timed out

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Public bug reported:

I can't connect to my wi-fi with my laptop.

I get this error message in the syslog.
Apr  8 22:25:35 ubuntu kernel: [  793.895555] wlan0: authentication with 10:bf:48:e5:d1:b8 timed out

ubuntu@ubuntu:~$ lshw -c network
WARNING: you should run this program as super-user.
  *-network               
       description: Ethernet interface
       product: Ethernet Connection I217-V
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eth0
       version: 05
       serial: 00:90:f5:f8:ef:86
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k duplex=full firmware=0.12-3 ip=192.168.2.208 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:29 memory:f7e00000-f7e1ffff memory:f7e3d000-f7e3dfff ioport:f080(size=32)
  *-network
       description: Wireless interface
       product: Wireless 3160
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 83
       serial: a0:88:69:39:ae:d6
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=3.19.0-10-generic firmware=25.15.12.0 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
       resources: irq:32 memory:f7c00000-f7c01fff

Attached is the full syslog.
This machine has been working more or less ok on vivid for at least three months. Sometimes it refused to connect to the wi-fi, but after a restart it started working. 
Recently I changed the network from N to G, and recently did an upgrade to the latest vivid. I had some problems booting, so I also recently fully removed upstart. It boots fine with systemd, and everything else seem to be working.
I've just tested with a daily vivid live USB, and the same problem happened.

I'm connecting to the same network using the same password with my other
machine.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: network-manager 0.9.10.0-4ubuntu11
ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
Uname: Linux 3.19.0-10-generic x86_64
ApportVersion: 2.16.2-0ubuntu4
Architecture: amd64
CasperVersion: 1.356
CurrentDesktop: Unity
Date: Wed Apr  8 22:20:03 2015
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IpRoute:
 default via 192.168.2.1 dev eth0  proto static  metric 1024 
 169.254.0.0/16 dev eth0  scope link  metric 1000 
 192.168.2.0/24 dev eth0  proto kernel  scope link  src 192.168.2.208
LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
 DEVICE  TYPE      STATE         DBUS-PATH                                  CONNECTION          CON-UUID                              CON-PATH                                           
 eth0    ethernet  connected     /org/freedesktop/NetworkManager/Devices/1  Wired connection 1  cf5cb021-0df1-4f13-b74c-c3e9c6749a30  /org/freedesktop/NetworkManager/ActiveConnection/2 
 wlan0   wifi      disconnected  /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'.

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


** Tags: amd64 apport-bug vivid

** Attachment added: "syslog"
   https://bugs.launchpad.net/bugs/1441893/+attachment/4369887/+files/syslog

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1441893

Title:
  Can't connect to my wi-fi: authentication timed out

Status in network-manager package in Ubuntu:
  New

Bug description:
  I can't connect to my wi-fi with my laptop.

  I get this error message in the syslog.
  Apr  8 22:25:35 ubuntu kernel: [  793.895555] wlan0: authentication with 10:bf:48:e5:d1:b8 timed out

  ubuntu@ubuntu:~$ lshw -c network
  WARNING: you should run this program as super-user.
    *-network               
         description: Ethernet interface
         product: Ethernet Connection I217-V
         vendor: Intel Corporation
         physical id: 19
         bus info: pci@0000:00:19.0
         logical name: eth0
         version: 05
         serial: 00:90:f5:f8:ef:86
         size: 1Gbit/s
         capacity: 1Gbit/s
         width: 32 bits
         clock: 33MHz
         capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
         configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k duplex=full firmware=0.12-3 ip=192.168.2.208 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
         resources: irq:29 memory:f7e00000-f7e1ffff memory:f7e3d000-f7e3dfff ioport:f080(size=32)
    *-network
         description: Wireless interface
         product: Wireless 3160
         vendor: Intel Corporation
         physical id: 0
         bus info: pci@0000:03:00.0
         logical name: wlan0
         version: 83
         serial: a0:88:69:39:ae:d6
         width: 64 bits
         clock: 33MHz
         capabilities: bus_master cap_list ethernet physical wireless
         configuration: broadcast=yes driver=iwlwifi driverversion=3.19.0-10-generic firmware=25.15.12.0 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
         resources: irq:32 memory:f7c00000-f7c01fff

  Attached is the full syslog.
  This machine has been working more or less ok on vivid for at least three months. Sometimes it refused to connect to the wi-fi, but after a restart it started working. 
  Recently I changed the network from N to G, and recently did an upgrade to the latest vivid. I had some problems booting, so I also recently fully removed upstart. It boots fine with systemd, and everything else seem to be working.
  I've just tested with a daily vivid live USB, and the same problem happened.

  I'm connecting to the same network using the same password with my
  other machine.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: network-manager 0.9.10.0-4ubuntu11
  ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
  Uname: Linux 3.19.0-10-generic x86_64
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  CasperVersion: 1.356
  CurrentDesktop: Unity
  Date: Wed Apr  8 22:20:03 2015
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  IpRoute:
   default via 192.168.2.1 dev eth0  proto static  metric 1024 
   169.254.0.0/16 dev eth0  scope link  metric 1000 
   192.168.2.0/24 dev eth0  proto kernel  scope link  src 192.168.2.208
  LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-dev:
   DEVICE  TYPE      STATE         DBUS-PATH                                  CONNECTION          CON-UUID                              CON-PATH                                           
   eth0    ethernet  connected     /org/freedesktop/NetworkManager/Devices/1  Wired connection 1  cf5cb021-0df1-4f13-b74c-c3e9c6749a30  /org/freedesktop/NetworkManager/ActiveConnection/2 
   wlan0   wifi      disconnected  /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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