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[JD Rogers <1281729@xxxxxxxxxxxxxxxxxx>]

Behaviour has not changed after BIOS update. Right after I wrote comment
#4, I lost the network, but cycling wifi via nm-applet brought it back.
Things seemed to otherwise work yesterday, but this morning after resume
from suspend it was back to the same: associated with my AP, but pages
in browser do not load. I then ping the AP and get "unreachable".

$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
G7ET98WW (2.58 )
12/16/2013

# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
>From 192.168.1.10 icmp_seq=1 Destination Host Unreachable
^C
--- 192.168.1.1 ping statistics ---
2 packets transmitted, 0 received, +1 errors, 100% packet loss, time 1001ms

# iwconfig
eth0      no wireless extensions.

lo        no wireless extensions.

virbr0    no wireless extensions.

wlan0     IEEE 802.11abgn  ESSID: <hidden>  
          Mode:Managed  Frequency:2.437 GHz  Access Point: <hidden>
          Bit Rate=78 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=70/70  Signal level=-34 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:26  Invalid misc:52   Missed beacon:0

# dmesg |tail
[41713.948053] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[41713.954762] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[41714.098900] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[41720.587581] wlan0: authenticate with <hidden>
[41720.599843] wlan0: send auth to <hidden> (try 1/3)
[41720.604907] wlan0: authenticated
[41720.608100] wlan0: associate with <hidden> (try 1/3)
[41720.611883] wlan0: RX AssocResp from <hidden> (capab=0x1411 status=0 aid=5)
[41720.622822] wlan0: associated
[41720.622892] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

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https://bugs.launchpad.net/bugs/1281729

Title:
  8086:4238 [Lenovo ThinkPad T430s] iwlwifi using 802.11n associates
  with access point but network is unreachable

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  While the above bug appears to connect and then slow down eventually
  failing with packet loss, my problem is almost the opposite. If I can
  connect, it seems to work fine indefinitely, but initial connections
  (after suspend, or right after a reboot) only occasionally works.
  Sometimes, if I wait long enough the connection starts working after
  several minutes, sometimes it works if I turn off wireless and turn it
  back on, but often it just never works. According to dmesg, iwlwifi is
  associating with the access point just fine, but if I ping the ap, I
  get "netowrk unreachable".

  WORKAROUND: 11n_disable=1

  After associating, dmesg report:
  # dmesg |tail
  [101704.467324] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
  [101704.474053] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
  [101704.621429] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
  [101704.717787] wlan0: authenticate with xx:xx:xx:xx:xx:xx
  [101704.780532] wlan0: send auth to xx:xx:xx:xx:xx:xx (try 1/3)
  [101704.793246] wlan0: authenticated
  [101704.797390] wlan0: associate with xx:xx:xx:xx:xx:xx (try 1/3)
  [101704.798226] wlan0: RX AssocResp from xx:xx:xx:xx:xx:xx (capab=0x1011 status=0 aid=1)
  [101704.802300] wlan0: associated
  [101704.802347] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

  But network is unreachable.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-15-generic 3.11.0-15.25
  ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  jdrogers   2276 F.... pulseaudio
  Date: Tue Feb 18 12:12:57 2014
  HibernationDevice: RESUME=UUID=12dd9e3a-ab8c-468f-a7bc-f3c05e4bcddc
  InstallationDate: Installed on 2014-01-01 (47 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 2352CTO
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-15-generic root=UUID=b9c20532-4cfc-4833-830a-3d4500621c0e ro rootflags=subvol=@ quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-15-generic N/A
   linux-backports-modules-3.11.0-15-generic  N/A
   linux-firmware                             1.116.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/24/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G7ET29WW (1.11 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2352CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG7ET29WW(1.11):bd05/24/2012:svnLENOVO:pn2352CTO:pvrThinkPadT430s:rvnLENOVO:rn2352CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2352CTO
  dmi.product.version: ThinkPad T430s
  dmi.sys.vendor: LENOVO

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