kern/170254: [ath] Atheros 9220 device timeouts.
Adrian Chadd
adrian at freebsd.org
Mon Jul 30 21:40:10 UTC 2012
The following reply was made to PR kern/170254; it has been noted by GNATS.
From: Adrian Chadd <adrian at freebsd.org>
To: lev at freebsd.org
Cc: bug-followup at freebsd.org
Subject: Re: kern/170254: [ath] Atheros 9220 device timeouts.
Date: Mon, 30 Jul 2012 14:39:44 -0700
On 30 July 2012 00:18, Lev Serebryakov <lev at freebsd.org> wrote:
> Hello, Bug-followup.
>
> Here is more logs. Now, client was 802.11g only, and it was not
> sleeping (I've wathcied movie on notebook from server, via WiFi).
> I've got multiple device timeouts (1 per 20-30 seconds), and notebook
> lost connection at all (it shows my AP in list of available APs, but
> cannot associate with it). Only after 10 minutes (!) AP becomes
> available again.
Howdy,
I'm going over the logs now. Thanks very much for this.
Now, whilst I'm doing so - the next time this TX hang happens (where
you can scan but can't associate/pass traffic), can you please log in
to the AP and do 'sysctl dev.ath.0.txagg=1' and include that? I bet
we'll find the TX buffers have been exhausted.
The TX buffer exhaustion issue should really be fixed as a separate
issue. I would like to see why you're seeing TX stalls.
Adrian
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