Under stock Ubuntu 9.04, my AR5008 card is picked up and sees my 5 GHz
802.11n access points, as well as my 802.11g access points. I do not
know the precise driver configuration (just booted live disc) but
clearly this demonstrates the card is working fine. OS X also agrees.
Under Debian with a 2.6.29-2 kernel and compat-wireless built from
yesterday's nightly, CRDA and regulatory.bin, I cannot pick up my
802.11n access points on channels 149 and 157. Moreover, I am having
weird problems with channels being disabled that should not be
disabled, e.g. everything from 100 to 140 is disabled, even though my
regulatory domain allows those channels. I thought this was a DFS
issue, but 52-64 requires DFS and those channels ARE enabled, so I
doubt that's the case.
Can anybody clarify the situation here?!
-Galen
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Below follows output from the machine:
hackbookpro-debian:~# uname -a
Linux hackbookpro-debian 2.6.29-2-686-bigmem #1 SMP Sun May 17
19:06:25 UTC 2009 i686 GNU/Linux
hackbookpro-debian:~# modinfo ath9k
filename: /lib/modules/2.6.29-2-686-bigmem/updates/drivers/net/
wireless/ath/ath9k/ath9k.ko
license: Dual BSD/GPL
description: Support for Atheros 802.11n wireless LAN cards.
author: Atheros Communications
alias: pci:v0000168Cd0000002Bsv*sd*bc*sc*i*
alias: pci:v0000168Cd0000002Asv*sd*bc*sc*i*
alias: pci:v0000168Cd00000029sv*sd*bc*sc*i*
alias: pci:v0000168Cd00000027sv*sd*bc*sc*i*
alias: pci:v0000168Cd00000024sv*sd*bc*sc*i*
alias: pci:v0000168Cd00000023sv*sd*bc*sc*i*
depends: led-class,mac80211,ath,rfkill,cfg80211
vermagic: 2.6.29-2-686-bigmem SMP mod_unload modversions 686
parm: nohwcrypt:Disable hardware encryption (int)
parm: btcoex_enable:Enable Bluetooth coexistence support
(bool)
hackbookpro-debian:~# iw reg get
country US:
(2402 - 2472 @ 40), (3, 27)
(5170 - 5250 @ 40), (3, 17)
(5250 - 5330 @ 40), (3, 20), DFS
(5490 - 5710 @ 40), (3, 20), DFS
(5735 - 5835 @ 40), (3, 30)
dmesg output of interest:
[ 8.808216] ath9k 0000:03:00.0: PCI INT A -> GSI 17 (level, low) ->
IRQ 17
[ 8.808231] ath9k 0000:03:00.0: setting latency timer to 64
[ 8.937198] ath: Country alpha2 being used: 00
[ 8.937201] ath: Regpair detected: 0x64
[ 8.963127] phy0: Selected rate control algorithm
'ath9k_rate_control'
[ 8.963407] Registered led device: ath9k-phy0::radio
[ 8.963422] Registered led device: ath9k-phy0::assoc
[ 8.963436] Registered led device: ath9k-phy0::tx
[ 8.963451] Registered led device: ath9k-phy0::rx
[ 8.963470] phy0: Atheros AR5418 MAC/BB Rev:2 AR5133 RF Rev:81:
mem=0xf8560000, irq=17
[ 7.596099] cfg80211: Using static regulatory domain info
[ 7.596104] cfg80211: Regulatory domain: US
[ 7.596108] (start_freq - end_freq @ bandwidth),
(max_antenna_gain, max_eirp)
[ 7.596114] (2402000 KHz - 2472000 KHz @ 40000 KHz), (600 mBi,
2700 mBm)
[ 7.596120] (5170000 KHz - 5190000 KHz @ 40000 KHz), (600 mBi,
2300 mBm)
[ 7.596125] (5190000 KHz - 5210000 KHz @ 40000 KHz), (600 mBi,
2300 mBm)
[ 7.596160] (5210000 KHz - 5230000 KHz @ 40000 KHz), (600 mBi,
2300 mBm)
[ 7.596166] (5230000 KHz - 5330000 KHz @ 40000 KHz), (600 mBi,
2300 mBm)
[ 7.596171] (5735000 KHz - 5835000 KHz @ 40000 KHz), (600 mBi,
3000 mBm)
[ 7.596287] cfg80211: Calling CRDA for country: US
hackbookpro-debian:~# ls -l /usr/lib/crda
total 4
-rw-r--r-- 1 root root 3084 2009-05-28 15:28 regulatory.bin
hackbookpro-debian:~# iw list
Wiphy phy0
Band 1:
HT capabilities: 0x104e
* 20/40 MHz operation
* SM PS disabled
* 40 MHz short GI
* max A-MSDU len 3839
* DSSS/CCK 40 MHz
HT A-MPDU factor: 0x0003 (65535 bytes)
HT A-MPDU density: 0x0006 (8 usec)
HT MCS set: ff ff 00 00 00 00 00 00 00 00 00 00 01 00 00 00
HT TX/RX MCS rate indexes supported:
MCS index 0
MCS index 1
MCS index 2
MCS index 3
MCS index 4
MCS index 5
MCS index 6
MCS index 7
MCS index 8
MCS index 9
MCS index 10
MCS index 11
MCS index 12
MCS index 13
MCS index 14
MCS index 15
Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (disabled)
* 2472 MHz [13] (disabled)
* 2484 MHz [14] (disabled)
Bitrates:
* 1.0 Mbps
* 2.0 Mbps (short preamble supported)
* 5.5 Mbps (short preamble supported)
* 11.0 Mbps (short preamble supported)
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
Band 2:
HT capabilities: 0x104e
* 20/40 MHz operation
* SM PS disabled
* 40 MHz short GI
* max A-MSDU len 3839
* DSSS/CCK 40 MHz
HT A-MPDU factor: 0x0003 (65535 bytes)
HT A-MPDU density: 0x0006 (8 usec)
HT MCS set: ff ff 00 00 00 00 00 00 00 00 00 00 01 00 00 00
HT TX/RX MCS rate indexes supported:
MCS index 0
MCS index 1
MCS index 2
MCS index 3
MCS index 4
MCS index 5
MCS index 6
MCS index 7
MCS index 8
MCS index 9
MCS index 10
MCS index 11
MCS index 12
MCS index 13
MCS index 14
MCS index 15
Frequencies:
* 5180 MHz [36] (30.0 dBm) (passive scanning, no IBSS)
* 5200 MHz [40] (30.0 dBm) (passive scanning, no IBSS)
* 5220 MHz [44] (30.0 dBm) (passive scanning, no IBSS)
* 5240 MHz [48] (30.0 dBm) (passive scanning, no IBSS)
* 5260 MHz [52] (30.0 dBm) (passive scanning, no IBSS, radar
detection)
* 5280 MHz [56] (30.0 dBm) (passive scanning, no IBSS, radar
detection)
* 5300 MHz [60] (30.0 dBm) (passive scanning, no IBSS, radar
detection)
* 5320 MHz [64] (30.0 dBm) (passive scanning, no IBSS, radar
detection)
* 5500 MHz [100] (disabled)
* 5520 MHz [104] (disabled)
* 5540 MHz [108] (disabled)
* 5560 MHz [112] (disabled)
* 5580 MHz [116] (disabled)
* 5600 MHz [120] (disabled)
* 5620 MHz [124] (disabled)
* 5640 MHz [128] (disabled)
* 5660 MHz [132] (disabled)
* 5680 MHz [136] (disabled)
* 5700 MHz [140] (disabled)
* 5745 MHz [149] (30.0 dBm) (passive scanning, no IBSS)
* 5765 MHz [153] (30.0 dBm) (passive scanning, no IBSS)
* 5785 MHz [157] (30.0 dBm) (passive scanning, no IBSS)
* 5805 MHz [161] (30.0 dBm) (passive scanning, no IBSS)
* 5825 MHz [165] (30.0 dBm) (passive scanning, no IBSS)
Bitrates:
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
max # scan SSIDs: 4
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* monitor
* mesh point
On Fri, May 29, 2009 at 9:11 AM, Galen P Zink <[email protected]> wrote:
> Under stock Ubuntu 9.04, my AR5008 card is picked up and sees my 5 GHz
> 802.11n access points, as well as my 802.11g access points. I do not know
> the precise driver configuration (just booted live disc) but clearly this
> demonstrates the card is working fine. OS X also agrees.
>
> Under Debian with a 2.6.29-2 kernel and compat-wireless built from
> yesterday's nightly, CRDA and regulatory.bin, I cannot pick up my 802.11n
> access points on channels 149 and 157. Moreover, I am having weird problems
> with channels being disabled that should not be disabled, e.g. everything
> from 100 to 140 is disabled, even though my regulatory domain allows those
> channels. I thought this was a DFS issue, but 52-64 requires DFS and those
> channels ARE enabled, so I doubt that's the case.
>
> Can anybody clarify the situation here?!
Sure.
> [ 8.808231] ath9k 0000:03:00.0: setting latency timer to 64
> [ 8.937198] ath: Country alpha2 being used: 00
> [ 8.937201] ath: Regpair detected: 0x64
0x64 or any regpair with 0x60 in it is a world regulatory domain in
the Atheros EEPROM, so the card is configured to world roam. You can
set the regulatory domain to "US" but the card is already programmed
to world roam therefore that regulatory domain is always respected.
Selecting "US" in this case would only help the card be more compliant
in case the used regulatory domain enables channels not allowed in the
US.
Luis