[ath9k-devel] Tplink TL-WN822N drops out connections randomly on Arch Linux with Kernel 3.9.4 (Mark Lee)

["Peter Vágner" <pvdeejay@gmail.com>]

Hello,
I do also have similar device and am facing a strange problem with it.
After booting up the machine I am unable to connect to certain wireless 
AP. That is an old Owislink WL5460 router set up in 2.4B+G mode with WPA 
encryption.
After connecting to another AP e.g. non encrypted AP made up of my 
Android phone or even encrypted AP created on an iphone I can then 
connect to the problematic AP.
I am on arch linux currently with kernel 3.9.6. The issue started 
happening as I have updated my kernel to 3.9.1. Previously everything 
has been working fine wor me.

Here are some more details

$ lsusb | grep Ather
Bus 002 Device 005: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n

$ iw dev wlp0s26u1u6 get power_save
Power save: off


$ dmesg | grep 00:4f:62:05:df:2d
[   23.237360] wlp0s26u1u6: authenticate with 00:4f:62:05:df:2d
[   23.331989] wlp0s26u1u6: send auth to 00:4f:62:05:df:2d (try 1/3)
[   26.376049] wlp0s26u1u6: send auth to 00:4f:62:05:df:2d (try 2/3)
[   28.335490] wlp0s26u1u6: deauthenticating from 00:4f:62:05:df:2d by 
local choice (reason=3)
--- snip ---
This is repeating over and over again until I connect to something else.
And then the final successfull connection to this AP looks like...
[  252.381096] wlp0s26u1u6: authenticate with 00:4f:62:05:df:2d
[  252.520920] wlp0s26u1u6: send auth to 00:4f:62:05:df:2d (try 1/3)
[  252.524098] wlp0s26u1u6: associate with 00:4f:62:05:df:2d (try 1/3)
[  252.538293] wlp0s26u1u6: RX AssocResp from 00:4f:62:05:df:2d 
(capab=0x411 status=0 aid=3)

$ dmesg | grep ath9k_htc
[    7.353707] usb 2-1.6: ath9k_htc: Firmware htc_9271.fw requested
[    7.353772] usbcore: registered new interface driver ath9k_htc
[    7.829552] usb 2-1.6: ath9k_htc: Transferred FW: htc_9271.fw, size: 
51272
[    8.064565] ath9k_htc 2-1.6:1.0: ath9k_htc: HTC initialized with 33 
credits
[    8.255145] ath9k_htc 2-1.6:1.0: ath9k_htc: FW Version: 1.3
[  252.522905] ath9k_htc 2-1.6:1.0 wlp0s26u1u6: disabling HT as WMM/QoS 
is not supported by the AP
[  252.522908] ath9k_htc 2-1.6:1.0 wlp0s26u1u6: disabling VHT as WMM/QoS 
is not supported by the AP

$ sudo iw dev wlp0s26u1u6 scan dump
BSS 00:4f:62:05:df:2d(on wlp0s26u1u6) -- associated
     TSF: 254735798022 usec (2d, 22:45:35)
     freq: 2412
     beacon interval: 100 TUs
     capability: ESS Privacy ShortSlotTime (0x0411)
     signal: -61.00 dBm
     last seen: 103493 ms ago
     Information elements from Probe Response frame:
     SSID: predok
     Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0
     DS Parameter set: channel 1
     ERP: <no flags>
     Extended supported rates: 24.0 36.0 48.0 54.0
     WPA:     * Version: 1
          * Group cipher: TKIP
          * Pairwise ciphers: TKIP
          * Authentication suites: PSK
     RSN:     * Version: 1
          * Group cipher: TKIP
          * Pairwise ciphers: CCMP
          * Authentication suites: PSK
          * Capabilities: (0x0000)

$ sudo iw dev wlp0s26u1u6 scan dump
[sudo] password for peto:
BSS 00:4f:62:05:df:2d(on wlp0s26u1u6)
     TSF: 255417536590 usec (2d, 22:56:57)
     freq: 2412
     beacon interval: 100 TUs
     capability: ESS Privacy ShortSlotTime (0x0411)
     signal: -59.00 dBm
     last seen: 386 ms ago
     Information elements from Probe Response frame:
     SSID: predok
     Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0
     DS Parameter set: channel 1
     ERP: <no flags>
     Extended supported rates: 24.0 36.0 48.0 54.0
     WPA:     * Version: 1
          * Group cipher: TKIP
          * Pairwise ciphers: TKIP
          * Authentication suites: PSK
     RSN:     * Version: 1
          * Group cipher: TKIP
          * Pairwise ciphers: CCMP
          * Authentication suites: PSK
          * Capabilities: (0x0000)



Thanks and greetings

Peter

On 02.06.2013 19:00, Oleksij Rempel wrote:
> Can you please do some test:
> - disable STBC on access point. You will probably need to edit
> hostapd.conf manually.
> - change or disable encryption type.
>
>
> Am 02.06.2013 18:39, schrieb Mark E. Lee:
>> Access Point Firmware:  DD-WRT v24-sp2 (03/19/12) std
>> Access Point Hardware:  netgear-wnr2000v3
>>
>> Output of # iw dev wlan0 get power_save :
>> Power save: off
>>
>> Output of $ iw dev wlan0 scan dump :
>> Attached log file (unix ending)
>>
>> On Sun, 2013-06-02 at 12:00 +0200, ath9k-devel-request at lists.ath9k.org
>> wrote:
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