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[Shang Wu <shang@xxxxxxxxxxxxx>]

apport information

** Attachment added: "UdevDb.txt"
   https://bugs.launchpad.net/bugs/1372616/+attachment/4236739/+files/UdevDb.txt

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https://bugs.launchpad.net/bugs/1372616

Title:
   iwlwifi Intel Centrino Advanced-N 6230 Wifi disconnects

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Wifi disconnects every 30 minutes or so. I use Ubuntu 14.10 (the devel version). The used kernel is: 
  Linux daniel-laptop 3.16.0-16-generic #22-Ubuntu SMP Wed Sep 17 18:47:43 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  dmesg gives the following:
  daniel@daniel-laptop:~$ sudo dmesg | tail -n10
  [ 2122.301141] wlan0: deauthenticated from 00:1f:3f:d0:95:b3 (Reason: 6=CLASS2_FRAME_FROM_NONAUTH_STA)
  [ 2122.340914] cfg80211: Calling CRDA to update world regulatory domain
  [ 2122.510148] cfg80211: World regulatory domain updated:
  [ 2122.510156] cfg80211:  DFS Master region: unset
  [ 2122.510158] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
  [ 2122.510162] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 2122.510165] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 2122.510167] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 2122.510170] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 2122.510173] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)

  
  Here is the information concerning the wifi 

  daniel@daniel-laptop:~$ sudo lshw -class  network
    *-network               
         Beschreibung: Kabellose Verbindung
         Produkt: Centrino Advanced-N 6230 [Rainbow Peak]
         Hersteller: Intel Corporation
         Physische ID: 0
         Bus-Informationen: pci@0000:02:00.0
         Logischer Name: wlan0
         Version: 34
         Seriennummer: 88:53:2e:6e:20:bc
         Breite: 64 bits
         Takt: 33MHz
         Fähigkeiten: pm msi pciexpress bus_master cap_list ethernet physical wireless
         Konfiguration: broadcast=yes driver=iwlwifi driverversion=3.16.0-16-generic firmware=18.168.6.1 ip=192.168.178.44 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
         Ressourcen: irq:50 memory:c7400000-c7401fff
  --- 
  ApportVersion: 2.14.7-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.10
  InstallationDate: Installed on 2013-11-26 (305 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  Package: linux (not installed)
  Tags:  utopic
  Uname: Linux 3.17.0-031700rc6-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True

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