[ath9k-devel] Unreliable connection with AR5008 (AR5416/AR2122)

[Andrej Podzimek <andrej@podzimek.org>]

>>> That's a pretty wild conclusion given that minstrel is not used on
>>> ath9k. ath9k uses its own rate control algorithm. Can you please try
>>> bisecting between 2.6.29 and 2.6.30? It would be of much help.
>> So the ieee80211_default_rc_algo option of mac80211 has no meaning at all?
>>
>> Unfortunately, I can't find the commit that caused the problem. Don't have
>> enough time for so many compilations and experiments. Anyway, there have
>> been disassociation problems since I bought the card, so I'm not perfectly
>> sure if the failures were absent or just hidden by the fact that there were
>> few people walking thorugh the building during summmer holidays.
>>
>> Anyway, a slightly modified version of my question: Are there any
>> alternative rate control algorithms? Trying one of them might be a good
>> thing to start with...
>>
>>> What AP do you have? What AP setup settings do you have?
>> I tried three (or perhaps even more) APs. The problem was the same
>> everywhere. I only know the type of one of them: Zyxel NBG-420N. It's set to
>> WPA2 with EAP-TLS authentication. It does *not* provide any detailed WiFi
>> configuration (DTIM period, RTS/fragmentation threshold, beacon interval and
>> the like).
>>
>> The Zyxel AP is a standard basic AP for home computing. The other three (or
>> more) APs are enterprise-class devices that form a big network with roaming
>> inside a university building. Zyxel NBG-420N supports 802.11n, whereas all
>> the other APs only support 802.11g.
> 
> This should not affect anything but.. can you try compiling and
> installin the latest git version of wpa_supplicant?

OK, compiled the current version from GIT.

I can still see deauthentications in the log. However, the network hasn't got stuck yet. It's too early to make a conclusion, I'll report back after two days or so.

There's a new line appearing in the logs before each deauthentication:

	ath9k: Two wiphys trying to scan at the same time

I haven't seen this one before.

Andrej