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Date:      Tue, 8 Apr 2014 20:40:01 -0700
From:      Adrian Chadd <adrian@freebsd.org>
To:        Erich Dollansky <erichsfreebsdlist@alogt.com>
Cc:        "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org>, sean bruno <sbruno@ignoranthack.me>
Subject:   Re: iwn0 hangs randomly when starting the machine
Message-ID:  <CAJ-VmokCjwQNXc0ihx7jFZtE-5j9UHHf2KCrU5L2SW2p6DAwQg@mail.gmail.com>
In-Reply-To: <20140409113254.3a3277a3@X220.alogt.com>
References:  <20140331073054.5d7642d6@X220.alogt.com> <1397006320.5173.2.camel@powernoodle.corp.yahoo.com> <20140409093642.19c2f5cb@X220.alogt.com> <CAJ-VmokeKSpYuq-ROOX=Z00rESFGvQTb%2BdXtRrUvc5QXzJvMYg@mail.gmail.com> <20140409113254.3a3277a3@X220.alogt.com>

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I'm not sure. I'd really like to see what the story is with coexistence somehow.


-a


On 8 April 2014 20:32, Erich Dollansky <erichsfreebsdlist@alogt.com> wrote:
> Hi,
>
> On Tue, 8 Apr 2014 20:07:39 -0700
> Adrian Chadd <adrian@freebsd.org> wrote:
>
>> Coexistence is to deal with the fact that a 40MHz channel may overlap
>> a 20MHz-only AP in the extension channel.
>>
>> If the AP finds a 20MHz AP in the extension channel (ie, the other
>> half of its 40MHz) channel then it'll flip itself to 20MHz. If it
>> determines it isn't there any more, it'll flip the BSS to the 40MHz
>> channel.
>>
>> Now, why the hell it's causing the connection to fail? I have no idea.
>>
>> can someone file a PR that says it's all busted with 40MHz coxistence
>> enabled? We can then start debugging from that position.
>>
> I am not so sure if it is a general problem or just a DLink problem.
>
> I just activated my own access point and it worked there. The only
> problem is that it also works with DLink but only randomly. So, it
> still could have been that I was just always lucky when connecting to
> the ProLink access point I have.
>
> As the DLink is not mine, I am not even able to access its
> administration interface.
>
> Can I suggest to wait a bit to get more feedback to see if it is a
> general problem or a problem only linked to one manufacturer?
>
> Erich



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