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Wireless doesnt scan high channels (solved)
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Arctic
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Joined: 04 Jul 2011
Posts: 207

PostPosted: Thu May 03, 2012 9:09 pm    Post subject: Wireless doesnt scan high channels (solved) Reply with quote

I have a TL-WN722N(TPlink wireless card 802.11n) in ubuntu livecd , i can scan and join channel 12 or 13 but in gentoo i cant do that.
The ubuntu live cd uses the same kernel and modules , atk9k_htc , the dmesg is the same :

Code:
ath9k_htc 1-4:1.0: usb_probe_interface
[    6.936625] ath9k_htc 1-4:1.0: usb_probe_interface - got id
[    7.491932] usb 1-4: ath9k_htc: Transferred FW: htc_9271.fw, size: 51272
[    7.726981] ath9k_htc 1-4:1.0: ath9k_htc: HTC initialized with 33 credits
[    7.919457] ath9k_htc 1-4:1.0: ath9k_htc: FW Version: 1.3
[    7.919459] ath: EEPROM regdomain: 0x809c
[    7.919460] ath: EEPROM indicates we should expect a country code
[    7.919462] ath: doing EEPROM country->regdmn map search
[    7.919463] ath: country maps to regdmn code: 0x52
[    7.919464] ath: Country alpha2 being used: CN
[    7.919465] ath: Regpair used: 0x52
[    7.919846] ieee80211 phy0: Atheros AR9271 Rev:1
[    7.920718] Registered led device: ath9k_htc-phy0
[    7.920722] usb 1-4: ath9k_htc: USB layer initialized
[    7.920739] usbcore: registered new interface driver ath9k


the only diference is that in ubuntu cfg80211 is compiled as module , but the country code uses the same CN (china) but in my country is allowed to use this frequencies.
I low channels the card work fine , the problem is that wifis around me use lows channels and sometimes it causes interferences

Thanks in advance


Last edited by Arctic on Tue Jun 12, 2012 12:17 pm; edited 1 time in total
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cwr
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Joined: 17 Dec 2005
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PostPosted: Sun May 06, 2012 2:26 pm    Post subject: Reply with quote

There have been a number of comments on this problem - older kernels
(~2.6.32) worked, but none of the newer kernels AFAIK. For some reason
the ath9k developers no longer allow you to set the local country code
using CRDA; I think you'll have to live with the problem.

Will
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Arctic
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PostPosted: Sun May 06, 2012 10:10 pm    Post subject: Reply with quote

cwr wrote:
There have been a number of comments on this problem - older kernels
(~2.6.32) worked, but none of the newer kernels AFAIK. For some reason
the ath9k developers no longer allow you to set the local country code
using CRDA; I think you'll have to live with the problem.

Will


Ubuntu uses 3.2 kernel and it works fine and dmesg output shows that they didnt change countrycode ,my device modules is developed since 2.6.37 so i guess it can be fixed
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Arctic
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PostPosted: Tue Jun 12, 2012 12:18 pm    Post subject: Reply with quote

Compiling cfg80211 as module solve the problem :wink:
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