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Date: Sat, 6 Sep 2014 14:03:34 -0700
Message-ID: <CAJ-Vmo=BYCrHdVy0KyOhTjF0QUu1fB0sjWv3z2bGNA0OBDHpmg@mail.gmail.com>
Subject: Re: [ath] AR9227 hang: ath_rate_findrate: switching quickly..
From: Adrian Chadd <adrian.chadd@gmail.com>
To: Alex Deiter <alex.deiter@gmail.com>, 
 "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org>
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Hi!

On 6 September 2014 02:39, Alex Deiter <alex.deiter@gmail.com> wrote:
> Hello Adrian,
>
> Today the network adapter completely hung with messages:
>
> Sep  6 13:26:19 blackbird kernel: ar5416PerCalibrationN: NF calibration
> didn't finish; delaying CCA
> Sep  6 13:26:49 blackbird kernel: ar5416PerCalibrationN: NF calibration
> didn't finish; delaying CCA
> Sep  6 13:27:19 blackbird kernel: ar5416PerCalibrationN: NF calibration
> didn't finish; delaying CCA
> Sep  6 13:27:49 blackbird kernel: ar5416PerCalibrationN: NF calibration
> didn't finish; delaying CCA
>
> and clients can not connect.

Does this always appear when it hangs?

That means the baseband has gone receive deaf and locked up.

Lemme go find an AR9227 to throw in a test AP here and reproduce. I
remember seeing this in the past, so I should be able to reproduce it
relatively easily.

Thanks!


-a