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[Bug 837076] Re: 8086:422b [iwlwifi] Intel Centrino Ultimate-N 6300 AGN and packet loss

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>
Date: Fri, 20 Sep 2013 22:35:28 -0000
Reply-to: Bug 837076 <837076@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Given the number of bugs that the Kernel Team receives during any
development cycle it is impossible for us to review them all. Therefore,
we occasionally resort to using automated bots to request further
testing. This is such a request.

We are approaching release and would like to confirm if this bug is
still present. Please test again with the latest development kernel and
indicate in the bug if this issue still exists or not.

You can update to the latest development kernel by simply running the
following commands in a terminal window:

    sudo apt-get update
    sudo apt-get dist-upgrade

If the bug still exists, change the bug status from Incomplete to
Confirmed. If the bug no longer exists, change the bug status from
Incomplete to Fix Released.

Thank you for your help, we really do appreciate it.


** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

** Tags added: kernel-request-3.11.0-7.14

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https://bugs.launchpad.net/bugs/837076

Title:
  8086:422b [iwlwifi] Intel Centrino Ultimate-N 6300 AGN and packet loss

Status in “linux” package in Ubuntu:
  Incomplete
Status in “linux” source package in Saucy:
  Incomplete

Bug description:
  Hi,

  I have recently swapped the internal WiFi adapter with an Ultimate-N
  6300 and I'm seeing a lot of packet loss. Some additional info is as
  follows:

  wlan1     IEEE 802.11abgn  ESSID:"star-local"  
            Mode:Managed  Frequency:2.412 GHz  Access Point: 00:22:75:29:EC:61   
            Bit Rate=121.5 Mb/s   Tx-Power=15 dBm   
            Retry  long limit:7   RTS thr:off   Fragment thr:off
            Power Management:off
            Link Quality=49/70  Signal level=-61 dBm  
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:205  Invalid misc:5   Missed beacon:0

  $ ping -c 20 192.168.2.1
  PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.
  64 bytes from 192.168.2.1: icmp_req=1 ttl=64 time=3.83 ms
  64 bytes from 192.168.2.1: icmp_req=2 ttl=64 time=2.56 ms
  64 bytes from 192.168.2.1: icmp_req=3 ttl=64 time=2.59 ms
  64 bytes from 192.168.2.1: icmp_req=4 ttl=64 time=2.57 ms
  64 bytes from 192.168.2.1: icmp_req=5 ttl=64 time=3.23 ms
  64 bytes from 192.168.2.1: icmp_req=6 ttl=64 time=3.13 ms
  64 bytes from 192.168.2.1: icmp_req=7 ttl=64 time=4.04 ms
  64 bytes from 192.168.2.1: icmp_req=11 ttl=64 time=3.89 ms
  64 bytes from 192.168.2.1: icmp_req=12 ttl=64 time=3.80 ms
  64 bytes from 192.168.2.1: icmp_req=13 ttl=64 time=82.4 ms
  64 bytes from 192.168.2.1: icmp_req=14 ttl=64 time=105 ms
  64 bytes from 192.168.2.1: icmp_req=15 ttl=64 time=2.57 ms
  64 bytes from 192.168.2.1: icmp_req=16 ttl=64 time=2.97 ms
  64 bytes from 192.168.2.1: icmp_req=17 ttl=64 time=2.57 ms
  64 bytes from 192.168.2.1: icmp_req=18 ttl=64 time=2.57 ms
  64 bytes from 192.168.2.1: icmp_req=19 ttl=64 time=3.94 ms
  64 bytes from 192.168.2.1: icmp_req=20 ttl=64 time=3.51 ms

  --- 192.168.2.1 ping statistics ---
  20 packets transmitted, 17 received, 15% packet loss, time 19028ms
  rtt min/avg/max/mdev = 2.567/13.879/105.633/29.547 ms

  [ 5677.146495] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
  [ 5677.146504] iwlagn: Copyright(c) 2003-2011 Intel Corporation
  [ 5677.146662] iwlagn 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
  [ 5677.146734] iwlagn 0000:01:00.0: setting latency timer to 64
  [ 5677.146841] iwlagn 0000:01:00.0: Detected Intel(R) Centrino(R) Ultimate-N 6300 AGN, REV=0x74
  [ 5677.164555] iwlagn 0000:01:00.0: device EEPROM VER=0x436, CALIB=0x6
  [ 5677.164562] iwlagn 0000:01:00.0: Device SKU: 0Xb
  [ 5677.164566] iwlagn 0000:01:00.0: Valid Tx ant: 0X7, Valid Rx ant: 0X7
  [ 5677.164650] iwlagn 0000:01:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
  [ 5677.165072] iwlagn 0000:01:00.0: irq 46 for MSI/MSI-X
  [ 5677.168745] iwlagn 0000:01:00.0: loaded firmware version 9.221.4.1 build 25532
  [ 5677.169561] Registered led device: phy6-led
  [ 5677.169644] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain 
  [ 5677.170079] ieee80211 phy6: Selected rate control algorithm 'iwl-agn-rs'
  [ 5677.221260] udevd[11216]: renamed network interface wlan0 to wlan1
  [ 5677.640171] ADDRCONF(NETDEV_UP): wlan1: link is not ready
  [ 5685.467019] wlan1: authenticate with 00:22:75:29:ec:61 (try 1)
  [ 5685.469706] wlan1: authenticated
  [ 5685.470195] wlan1: associate with 00:22:75:29:ec:61 (try 1)
  [ 5685.662167] wlan1: associate with 00:22:75:29:ec:61 (try 2)
  [ 5685.666099] wlan1: RX AssocResp from 00:22:75:29:ec:61 (capab=0x411 status=0 aid=1)
  [ 5685.666110] wlan1: associated
  [ 5685.680357] ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
  [ 5685.680483] cfg80211: Calling CRDA for country: US
  [ 5685.689341] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689355] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689364] cfg80211: Updating information on frequency 2417 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689373] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689381] cfg80211: Updating information on frequency 2422 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689389] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689397] cfg80211: Updating information on frequency 2427 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689406] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689413] cfg80211: Updating information on frequency 2432 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689422] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689429] cfg80211: Updating information on frequency 2437 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689438] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689446] cfg80211: Updating information on frequency 2442 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689454] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689461] cfg80211: Updating information on frequency 2447 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689469] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689475] cfg80211: Updating information on frequency 2452 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689482] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689490] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689498] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689504] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689511] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5685.689517] cfg80211: Disabling freq 2467 MHz
  [ 5685.689521] cfg80211: Disabling freq 2472 MHz
  [ 5685.689527] cfg80211: Updating information on frequency 5180 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689536] cfg80211: 5170000 KHz - 5250000 KHz @  KHz), (300 mBi, 1700 mBm)
  [ 5685.689542] cfg80211: Updating information on frequency 5200 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689550] cfg80211: 5170000 KHz - 5250000 KHz @  KHz), (300 mBi, 1700 mBm)
  [ 5685.689557] cfg80211: Updating information on frequency 5220 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689566] cfg80211: 5170000 KHz - 5250000 KHz @  KHz), (300 mBi, 1700 mBm)
  [ 5685.689573] cfg80211: Updating information on frequency 5240 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689582] cfg80211: 5170000 KHz - 5250000 KHz @  KHz), (300 mBi, 1700 mBm)
  [ 5685.689590] cfg80211: Updating information on frequency 5260 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689598] cfg80211: 5250000 KHz - 5330000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689604] cfg80211: Updating information on frequency 5280 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689612] cfg80211: 5250000 KHz - 5330000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689618] cfg80211: Updating information on frequency 5300 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689626] cfg80211: 5250000 KHz - 5330000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689632] cfg80211: Updating information on frequency 5320 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689639] cfg80211: 5250000 KHz - 5330000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689645] cfg80211: Updating information on frequency 5500 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689653] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689659] cfg80211: Updating information on frequency 5520 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689666] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689672] cfg80211: Updating information on frequency 5540 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689679] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689685] cfg80211: Updating information on frequency 5560 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689693] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689700] cfg80211: Updating information on frequency 5580 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689707] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689713] cfg80211: Disabling freq 5600 MHz
  [ 5685.689717] cfg80211: Disabling freq 5620 MHz
  [ 5685.689721] cfg80211: Disabling freq 5640 MHz
  [ 5685.689727] cfg80211: Updating information on frequency 5660 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689735] cfg80211: 5650000 KHz - 5710000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689742] cfg80211: Updating information on frequency 5680 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689750] cfg80211: 5650000 KHz - 5710000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689758] cfg80211: Updating information on frequency 5700 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689766] cfg80211: 5650000 KHz - 5710000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5685.689773] cfg80211: Updating information on frequency 5745 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689781] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5685.689787] cfg80211: Updating information on frequency 5765 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689795] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5685.689801] cfg80211: Updating information on frequency 5785 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689810] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5685.689818] cfg80211: Updating information on frequency 5805 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689826] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5685.689833] cfg80211: Updating information on frequency 5825 MHz for a 20 MHz width channel with regulatory rule:
  [ 5685.689840] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5685.689854] cfg80211: Regulatory domain changed to country: US
  [ 5685.689859] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
  [ 5685.689867] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm)
  [ 5685.689875] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm)
  [ 5685.689881] cfg80211:     (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5685.689888] cfg80211:     (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5685.689894] cfg80211:     (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5685.689900] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)
  [ 5696.142317] wlan1: no IPv6 routers present
  [ 5704.844712] cfg80211: All devices are disconnected, going to restore regulatory settings
  [ 5704.844726] cfg80211: Restoring regulatory settings
  [ 5704.844751] cfg80211: Calling CRDA to update world regulatory domain
  [ 5704.852662] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain 
  [ 5704.852672] cfg80211: World regulatory domain updated:
  [ 5704.852676] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
  [ 5704.852683] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5704.852689] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
  [ 5704.852695] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
  [ 5704.852700] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5704.852705] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5707.485993] wlan1: authenticate with 00:22:75:29:ec:61 (try 1)
  [ 5707.684842] wlan1: authenticate with 00:22:75:29:ec:61 (try 2)
  [ 5707.687942] wlan1: authenticated
  [ 5707.688277] wlan1: associate with 00:22:75:29:ec:61 (try 1)
  [ 5707.692145] wlan1: RX ReassocResp from 00:22:75:29:ec:61 (capab=0x411 status=0 aid=1)
  [ 5707.692153] wlan1: associated
  [ 5707.706352] cfg80211: Calling CRDA for country: US
  [ 5707.715195] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715200] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715203] cfg80211: Updating information on frequency 2417 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715207] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715209] cfg80211: Updating information on frequency 2422 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715212] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715215] cfg80211: Updating information on frequency 2427 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715218] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715221] cfg80211: Updating information on frequency 2432 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715224] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715226] cfg80211: Updating information on frequency 2437 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715229] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715232] cfg80211: Updating information on frequency 2442 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715235] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715238] cfg80211: Updating information on frequency 2447 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715241] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715243] cfg80211: Updating information on frequency 2452 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715246] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715249] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715252] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715255] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715257] cfg80211: 2402000 KHz - 2472000 KHz @  KHz), (300 mBi, 2700 mBm)
  [ 5707.715260] cfg80211: Disabling freq 2467 MHz
  [ 5707.715262] cfg80211: Disabling freq 2472 MHz
  [ 5707.715264] cfg80211: Updating information on frequency 5180 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715267] cfg80211: 5170000 KHz - 5250000 KHz @  KHz), (300 mBi, 1700 mBm)
  [ 5707.715270] cfg80211: Updating information on frequency 5200 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715273] cfg80211: 5170000 KHz - 5250000 KHz @  KHz), (300 mBi, 1700 mBm)
  [ 5707.715275] cfg80211: Updating information on frequency 5220 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715278] cfg80211: 5170000 KHz - 5250000 KHz @  KHz), (300 mBi, 1700 mBm)
  [ 5707.715281] cfg80211: Updating information on frequency 5240 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715284] cfg80211: 5170000 KHz - 5250000 KHz @  KHz), (300 mBi, 1700 mBm)
  [ 5707.715287] cfg80211: Updating information on frequency 5260 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715290] cfg80211: 5250000 KHz - 5330000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715292] cfg80211: Updating information on frequency 5280 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715295] cfg80211: 5250000 KHz - 5330000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715298] cfg80211: Updating information on frequency 5300 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715301] cfg80211: 5250000 KHz - 5330000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715303] cfg80211: Updating information on frequency 5320 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715306] cfg80211: 5250000 KHz - 5330000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715308] cfg80211: Updating information on frequency 5500 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715311] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715313] cfg80211: Updating information on frequency 5520 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715315] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715318] cfg80211: Updating information on frequency 5540 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715320] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715322] cfg80211: Updating information on frequency 5560 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715325] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715327] cfg80211: Updating information on frequency 5580 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715330] cfg80211: 5490000 KHz - 5600000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715332] cfg80211: Disabling freq 5600 MHz
  [ 5707.715333] cfg80211: Disabling freq 5620 MHz
  [ 5707.715335] cfg80211: Disabling freq 5640 MHz
  [ 5707.715337] cfg80211: Updating information on frequency 5660 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715340] cfg80211: 5650000 KHz - 5710000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715343] cfg80211: Updating information on frequency 5680 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715346] cfg80211: 5650000 KHz - 5710000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715348] cfg80211: Updating information on frequency 5700 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715351] cfg80211: 5650000 KHz - 5710000 KHz @  KHz), (300 mBi, 2000 mBm)
  [ 5707.715354] cfg80211: Updating information on frequency 5745 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715357] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5707.715359] cfg80211: Updating information on frequency 5765 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715362] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5707.715365] cfg80211: Updating information on frequency 5785 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715368] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5707.715370] cfg80211: Updating information on frequency 5805 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715373] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5707.715376] cfg80211: Updating information on frequency 5825 MHz for a 20 MHz width channel with regulatory rule:
  [ 5707.715379] cfg80211: 5735000 KHz - 5835000 KHz @  KHz), (300 mBi, 3000 mBm)
  [ 5707.715385] cfg80211: Regulatory domain changed to country: US
  [ 5707.715387] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
  [ 5707.715390] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm)
  [ 5707.715393] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm)
  [ 5707.715395] cfg80211:     (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5707.715398] cfg80211:     (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5707.715401] cfg80211:     (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [ 5707.715404] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)
  [ 5730.464633] iwlagn 0000:01:00.0: iwlagn_tx_agg_start on ra = 00:22:75:29:ec:61 tid = 0

  Now removing the module and reloading it with "11n_disable=1" seems to
  fix things - no packet loss and ping times slightly lower.

  wlan1     IEEE 802.11abg  ESSID:"star-local"  
            Mode:Managed  Frequency:2.412 GHz  Access Point: 00:22:75:29:EC:61   
            Bit Rate=54 Mb/s   Tx-Power=15 dBm   
            Retry  long limit:7   RTS thr:off   Fragment thr:off
            Power Management:off
            Link Quality=49/70  Signal level=-61 dBm  
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:0  Invalid misc:32   Missed beacon:0

  $ ping -c 20 192.168.2.1
  PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.
  64 bytes from 192.168.2.1: icmp_req=1 ttl=64 time=1.82 ms
  64 bytes from 192.168.2.1: icmp_req=2 ttl=64 time=1.17 ms
  64 bytes from 192.168.2.1: icmp_req=3 ttl=64 time=1.80 ms
  64 bytes from 192.168.2.1: icmp_req=4 ttl=64 time=0.650 ms
  64 bytes from 192.168.2.1: icmp_req=5 ttl=64 time=1.52 ms
  64 bytes from 192.168.2.1: icmp_req=6 ttl=64 time=2.29 ms
  64 bytes from 192.168.2.1: icmp_req=7 ttl=64 time=1.29 ms
  64 bytes from 192.168.2.1: icmp_req=8 ttl=64 time=1.65 ms
  64 bytes from 192.168.2.1: icmp_req=9 ttl=64 time=1.70 ms
  64 bytes from 192.168.2.1: icmp_req=10 ttl=64 time=1.06 ms
  64 bytes from 192.168.2.1: icmp_req=11 ttl=64 time=1.52 ms
  64 bytes from 192.168.2.1: icmp_req=12 ttl=64 time=1.49 ms
  64 bytes from 192.168.2.1: icmp_req=13 ttl=64 time=1.89 ms
  64 bytes from 192.168.2.1: icmp_req=14 ttl=64 time=1.46 ms
  64 bytes from 192.168.2.1: icmp_req=15 ttl=64 time=1.41 ms
  64 bytes from 192.168.2.1: icmp_req=16 ttl=64 time=1.28 ms
  64 bytes from 192.168.2.1: icmp_req=17 ttl=64 time=1.40 ms
  64 bytes from 192.168.2.1: icmp_req=18 ttl=64 time=0.946 ms
  64 bytes from 192.168.2.1: icmp_req=19 ttl=64 time=1.32 ms
  64 bytes from 192.168.2.1: icmp_req=20 ttl=64 time=1.32 ms

  --- 192.168.2.1 ping statistics ---
  20 packets transmitted, 20 received, 0% packet loss, time 19026ms
  rtt min/avg/max/mdev = 0.650/1.453/2.291/0.356 ms

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-9-generic 3.0.0-9.14
  ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
  Uname: Linux 3.0.0-9-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  hloeung    2208 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xc0700000 irq 48'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10ec0269,144dc098,00100100 HDA:80862805,80860101,00100000'
     Controls      : 18
     Simple ctrls  : 10
  Date: Tue Aug 30 09:21:33 2011
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 90X3A
  ProcEnviron:
   LANGUAGE=en_AU:en_GB:en
   PATH=(custom, no user)
   LANG=en_AU.UTF-8
   LC_MESSAGES=en_AU.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-9-generic root=UUID=b4df4065-2b5c-4a10-9c50-4d01d05d09c3 ro elevator=deadline apparmor=0 quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-9-generic N/A
   linux-backports-modules-3.0.0-9-generic  N/A
   linux-firmware                           1.60
  RfKill:
   7: phy7: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: Upgraded to oneiric on 2011-08-08 (21 days ago)
  dmi.bios.date: 03/08/2011
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: 04HL
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 90X3A
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: FAB1
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr04HL:bd03/08/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn90X3A:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn90X3A:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
  dmi.product.name: 90X3A
  dmi.product.version: 0.1
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
  --- 
  ApportVersion: 2.12.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  hloeung    1724 F.... pulseaudio
  DistroRelease: Ubuntu 13.10
  Lsusb:
   Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 90X3A
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-7-generic root=UUID=b4df4065-2b5c-4a10-9c50-4d01d05d09c3 ro quiet splash elevator=noop apparmor=0 pcie_aspm=force i915.i915_enable_rc6=7 i915.i915_enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1 intel_pstate=enable zswap.enabled=1 vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-7-generic N/A
   linux-backports-modules-3.11.0-7-generic  N/A
   linux-firmware                            1.113
  StagingDrivers: zram
  Tags:  saucy staging
  Uname: Linux 3.11.0-7-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin audio cdrom dialout libvirtd lpadmin netdev plugdev sambashare users video
  dmi.bios.date: 03/08/2011
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: 04HL
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 90X3A
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: FAB1
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr04HL:bd03/08/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn90X3A:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn90X3A:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
  dmi.product.name: 90X3A
  dmi.product.version: 0.1
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
  --- 
  ApportVersion: 2.12.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  hloeung    1724 F.... pulseaudio
  DistroRelease: Ubuntu 13.10
  Lsusb:
   Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 90X3A
  MarkForUpload: True
  Package: linux
  PackageArchitecture: amd64
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-7-generic root=UUID=b4df4065-2b5c-4a10-9c50-4d01d05d09c3 ro quiet splash elevator=noop apparmor=0 pcie_aspm=force i915.i915_enable_rc6=7 i915.i915_enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1 intel_pstate=enable zswap.enabled=1 vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-7-generic N/A
   linux-backports-modules-3.11.0-7-generic  N/A
   linux-firmware                            1.113
  StagingDrivers: zram
  Tags:  saucy staging
  Uname: Linux 3.11.0-7-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin audio cdrom dialout libvirtd lpadmin netdev plugdev sambashare users video
  dmi.bios.date: 03/08/2011
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: 04HL
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 90X3A
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: FAB1
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr04HL:bd03/08/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn90X3A:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn90X3A:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
  dmi.product.name: 90X3A
  dmi.product.version: 0.1
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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