From owner-freebsd-wireless@FreeBSD.ORG  Wed Sep  7 05:59:08 2011
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In-Reply-To: <201109062237.00788.jpaetzel@freebsd.org>
References: <201109062237.00788.jpaetzel@freebsd.org>
Date: Wed, 7 Sep 2011 13:59:07 +0800
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From: Adrian Chadd <adrian@freebsd.org>
To: Josh Paetzel <jpaetzel@freebsd.org>
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Cc: freebsd-wireless@freebsd.org
Subject: Re: T510 iwn and 9.0
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Hi!

On 7 September 2011 13:36, Josh Paetzel <jpaetzel@freebsd.org> wrote:
> I run a thinkpad T510 with a:
>
> =A0iwn0: <Intel(R) Centrino(R) Advanced-N 6200> mem 0xf2000000-0xf2001fff=
 irq 17
> at device 0.0 on pci3

The last person to touch this was bernhard; I don't know if he has
tinkered with the 6200 stuff though.

> I brought my laptop home tonight and was getting frequent disconnects her=
e as
> well. =A0I have an apple airport extreme (the AP at work is a netgear of =
unknown
> model)
>
> I was able to regain a nice stable connection by running ifconfig wlan0 -=
ht.

Would you mind trying this instead:

ifconfig wlan0 -ampdutx

Once you've associated (ie, once HT has been enabled), and then run
dhclient and start doing traffic.
I'd like to see if it's a general HT issue or whether it's the TX
aggregation code in iwn that needs tinkering with.

Thanks,


Adrian