From owner-freebsd-mobile@FreeBSD.ORG Wed Feb 15 06:32:02 2012 Return-Path: Delivered-To: mobile@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 245831065674; Wed, 15 Feb 2012 06:32:02 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-we0-f182.google.com (mail-we0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id 78DBA8FC14; Wed, 15 Feb 2012 06:32:01 +0000 (UTC) Received: by werm13 with SMTP id m13so654809wer.13 for ; Tue, 14 Feb 2012 22:32:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=2v42PmpFfBruhRT2S6JzKRoW1FEy2sip2wyVLL6X0Wg=; b=bsPFiYeN6u+1GH1wckz2kyJb362P0LsgtqGJ2qkUFh4UJ+y5vXnLHEWbSn01isv7AI c2JbhW9EOLsVtH9eOfb7OKI7B66wpSK+NN7JaFzBjqCX7LCUFjowPphqr+QpB7xAG4Xo qQBvpnFEsR39mF9Z06TIWJknvdjnetSZp0vMQ= MIME-Version: 1.0 Received: by 10.180.96.8 with SMTP id do8mr6286057wib.21.1329286141168; Tue, 14 Feb 2012 22:09:01 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.216.154.199 with HTTP; Tue, 14 Feb 2012 22:09:01 -0800 (PST) In-Reply-To: References: Date: Tue, 14 Feb 2012 22:09:01 -0800 X-Google-Sender-Auth: wSnxM8GiGDbTOvf8o5Bdyouxsb0 Message-ID: From: Adrian Chadd To: Jakob Pedersen Content-Type: text/plain; charset=ISO-8859-1 Cc: mobile@freebsd.org, wireless@freebsd.org Subject: Re: Problems with RaLink rt61pci/rt2561 wifi card X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Feb 2012 06:32:02 -0000 Hi, It sounds like it could be: * low TX power from your device; * Really bad RX gain settings somehow; * other fruity radio related stuff. The trouble is going to be diagnosing it. What I do in these instances is use a known-good setup (i have a bunch of laptops with AR9280's in them for this reason) to use in monitor mode - I can then get a rough estimate of TX power by just sniffing the frames your device is sending. That'd hopefully identify whether it's a TX or an RX problem. If the device works in monitor mode, you could try that: tcpdump -ni wlan0 -y IEEE802_11_RADIO Connect, then walk away from the AP. See if the RX RSSI fields in the tcpdump drop suddenly. If you get a few metres away and you're still receiving things strong, it may be a TX issue. If you suddenly stop hearing anything, it's likely an RX issue. Good luck! Adrian