Return-path: Received: from mail-ob0-f181.google.com ([209.85.214.181]:37195 "EHLO mail-ob0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934714Ab3FSTae convert rfc822-to-8bit (ORCPT ); Wed, 19 Jun 2013 15:30:34 -0400 Received: by mail-ob0-f181.google.com with SMTP id 16so6431956obc.12 for ; Wed, 19 Jun 2013 12:30:33 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20130619175850.GD4784@cmadams.net> References: <20130619160911.GB4784@cmadams.net> <51C1DDEB.3090701@lwfinger.net> <20130619164227.GC4784@cmadams.net> <20130619175850.GD4784@cmadams.net> Date: Wed, 19 Jun 2013 21:30:33 +0200 Message-ID: (sfid-20130619_213045_084355_515AA02A) Subject: Re: BCM4331 deauthenticates every five minutes From: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= To: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= , Larry Finger , b43-dev@lists.infradead.org, linux-wireless Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: 2013/6/19 Chris Adams : > Once upon a time, Rafał Miłecki said: >> I don't know how/if driver can be responsible for such reconnects. >> Over all it just TX and RX packets, right? Loosing a signal is >> something different, that can be related to the driver's bug. But as >> this happens every 5 minutes... I don't know. >> >> Did you try connecting to this AP with any other card and using >> similar kernel? I wonder if this can be some supplicant / mac80211 >> stack issue... > > I just fired up my Thinkpad T510 with an Intel "Centrino Ultimate-N > 6300" using iwlwifi, and it stays connected (does not appear to drop any > packets). This is also Fedora 18 x86_64 (slightly older kernel, but > I've had the problem on the MacBook since I installed it). There are > other people in the office with the same MacBook hardware (but running > OS X) that don't appear to be having any trouble either. > > The AP appears to be an Adtran (don't know the model). Thanks for info/testing. I still wonder how driver's code can cause any disconnections happening exactly every 5 minutes... Any idea anyone? One bug that was recently discovered and that sits in b43's code is passive scanning. For some reason it seems b43 doesn't do passive scanning, I didn't have time to debug that yet. I wonder if this can affect connection stability anyhow. Perhaps you could try performing manual scanning every ~minute? It's really just a crazy guess, I don't have any idea why it could help. But it's so trivial you may want to give it a try. -- Rafał