BCM4331 deauthenticates every five minutes

[Rafał Miłecki]

2013/6/19 Chris Adams <cma at cmadams.net>:
> Once upon a time, Rafał Miłecki <zajec5 at gmail.com> said:
>> I don't know how/if driver can be responsible for such reconnects.
>> Over all it just TX and RX packets, right? Loosing a signal is
>> something different, that can be related to the driver's bug. But as
>> this happens every 5 minutes... I don't know.
>>
>> Did you try connecting to this AP with any other card and using
>> similar kernel? I wonder if this can be some supplicant / mac80211
>> stack issue...
>
> I just fired up my Thinkpad T510 with an Intel "Centrino Ultimate-N
> 6300" using iwlwifi, and it stays connected (does not appear to drop any
> packets).  This is also Fedora 18 x86_64 (slightly older kernel, but
> I've had the problem on the MacBook since I installed it).  There are
> other people in the office with the same MacBook hardware (but running
> OS X) that don't appear to be having any trouble either.
>
> The AP appears to be an Adtran (don't know the model).

Thanks for info/testing. I still wonder how driver's code can cause
any disconnections happening exactly every 5 minutes... Any idea
anyone?

One bug that was recently discovered and that sits in b43's code is
passive scanning. For some reason it seems b43 doesn't do passive
scanning, I didn't have time to debug that yet. I wonder if this can
affect connection stability anyhow.

Perhaps you could try performing manual scanning every ~minute? It's
really just a crazy guess, I don't have any idea why it could help.
But it's so trivial you may want to give it a try.

-- 
Rafał