Intel Wireless 4965, no 802.11n

[Ben Keroack]

Using 10.10, drivers don't seem to detect 802.11n capabilities in Intel Wireless 4965 AGN chipset on Thinkpad T61. I can connect to 802.11n networks dual booting into windows.

bk@bk-ThinkPad-T61:~$ iwconfig
wlan0 IEEE 802.11abg ESSID:"chisq_667"
          Mode:Managed Frequency:2.412 GHz Access Point: 00:**:**:**:**:**
          Bit Rate=54 Mb/s Tx-Power=14 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=70/70 Signal level=-34 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

[ 13.942654] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[ 13.942658] iwlagn: Copyright(c) 2003-2010 Intel Corporation
[ 13.942751] iwlagn 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 13.942781] iwlagn 0000:03:00.0: setting latency timer to 64
[ 13.942855] iwlagn 0000:03:00.0: Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4
[ 13.985944] iwlagn 0000:03:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[ 13.986040] alloc irq_desc for 48 on node -1
[ 13.986042] alloc kstat_irqs on node -1
[ 13.986085] iwlagn 0000:03:00.0: irq 48 for MSI/MSI-X
[ 14.006090] iwlagn 0000:03:00.0: loaded firmware version 228.61.2.24
[ 14.013997] phy0: Selected rate control algorithm 'iwl-agn-rs'

Attempting to connect to a 802.11n network:
[ 95.765879] wlan0: authenticate with 00:**:**:**:**:** (try 1)
[ 95.769684] wlan0: authenticated
[ 95.769709] wlan0: associate with 00:**:**:**:**:** (try 1)
[ 95.773392] wlan0: RX AssocResp from 00:**:**:**:**:** (capab=0x431 status=10 aid=0)
[ 95.773396] wlan0: 00:**:**:**:**:** denied association (code=10)
[ 95.773409] wlan0: deauthenticating from 00:**:**:**:**:** by local choice (reason=3)

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.35
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bk 1451 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfe020000 irq 47'
   Mixer name : 'Analog Devices AD1984'
   Components : 'HDA:11d41984,17aa20d7,00100400'
   Controls : 31
   Simple ctrls : 19
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7KHT24WW-1.08'
   Mixer name : 'ThinkPad EC 7KHT24WW-1.08'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Thu Oct 21 06:35:16 2010
HibernationDevice: RESUME=UUID=a74a1f51-6595-4dd0-8af1-805fbf4ddf56
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: LENOVO 7658CTO
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=f06fd7db-23c8-4b9d-bd3f-63ae9e957a7a ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
dmi.bios.date: 07/01/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETC1WW (2.21 )
dmi.board.name: 7658CTO
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:bvr7LETC1WW(2.21):bd07/01/2008:svnLENOVO:pn7658CTO:pvrThinkPadT61:rvnLENOVO:rn7658CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7658CTO
dmi.product.version: ThinkPad T61
dmi.sys.vendor: LENOVO

[Pedro Bento (pgbento)]

Hi Ben,

Try to create a file named iwlagn on /etc/modprobe.d/ and put on it

options iwlagn 11n_disable=0 11n_disable50=0

and save it and reload iwlagn module this worked for me

[Junkern (ulf-bjork)]

I can confirm that the solution provided by Pedro Bento works on ThinkPad T61 Ubuntu 10.10 x86_64

iwconfig
wlan0 IEEE 802.11abgn ESSID:"penguins"
          Mode:Managed Frequency:2.417 GHz Access Point: 00:27:69:A1:A4:22
          Bit Rate=117 Mb/s Tx-Power=15 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=70/70 Signal level=-26 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

[ChrisLaw (megs-law)]

I have a similar problem, but I'm not sure it's exactly the same.
I have a Lenovo W510, I think the card (from lspci) is
    03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6200 (rev 35)

I can connect fine at home over WPA2 wifi, but at work we use LEAP, and this won't connect. The error I have in kern.log is

 phy2: Selected rate control algorithm 'iwl-agn-rs'
 ADDRCONF(NETDEV_UP): wlan0: link is not ready
 wlan0: authenticate with xx:xx:xx:xx:xx (try 1)
 wlan0: authenticated
 wlan0: associate with xx:xx:xx:xx:xx (try 1)
 wlan0: RX AssocResp from xx:xx:xx:xx:xx (capab=0x431 status=13 aid=0)
 wlan0: xx:xx:xx:xx:xx denied association (code=13)
 wlan0: deauthenticating from xx:xx:xx:xx:xx by local choice (reason=3)
 wlan0: authenticate with xx:xx:xx:xx:xx (try 1)
 wlan0: authenticated
 wlan0: associate with xx:xx:xx:xx:xx (try 1)
 wlan0: associate with xx:xx:xx:xx:xx (try 2)
 wlan0: RX AssocResp from xx:xx:xx:xx:xx (capab=0x431 status=13 aid=0)
 wlan0: xx:xx:xx:xx:xx denied association (code=13)
 wlan0: deauthenticating from xx:xx:xx:xx:xx by local choice (reason=3)

eventually
Basically, I don't ever get any connection, continually failing. The workaround above doesn't make any difference, but it's not an 802.11n network anyway, I think it's g. I believe that this worked at 10.04 without any patches, but I cannot swear to it.

Thanks,
Chris

[JLydia (obj)]

+1 for Pedro Bento's fix

I created the file, restarted my laptop, and...

---
wlan0 IEEE 802.11abgn ESSID:"@homey"
          Mode:Managed Frequency:2.412 GHz Access Point: E0:91:F5:01:9E:92
          Bit Rate=130 Mb/s Tx-Power=14 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=70/70 Signal level=-27 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0
---

Gracious`

[Jeremy Foshee (jeremyfoshee)]

Hi Ben,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[zleto (hr-petrov)]

Thanks Pedro Bento it was helpful

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[martinm1000 (martinmiller-gmail)]

Thanks to Pedro Bento, it worked. *BUT* I found out that there was already a file named
intel-5300-iwlagn-disable11n.conf that had the option to disable N !!! where it is coming from ?

What happened:

0. Still on Ubuntu 10.10, Thinkpad W510.
1. New router, with N capabilities.
2. Can connect to G network, not N (Password doesnt seems to work)
3. Windows 7 can do it on that machine ;-(
4. Searched forums...
5. Found this bug !

Thanks.