Return-path: Received: from nf-out-0910.google.com ([64.233.182.189]:37773 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753945AbYKTIuW (ORCPT ); Thu, 20 Nov 2008 03:50:22 -0500 Received: by nf-out-0910.google.com with SMTP id d3so169517nfc.21 for ; Thu, 20 Nov 2008 00:50:20 -0800 (PST) Message-ID: (sfid-20081120_095026_557603_D2FDAF6C) Date: Thu, 20 Nov 2008 09:50:20 +0100 From: "Stefan Steuerwald" To: "Johannes Berg" Subject: Re: Fwd: p54: testing AP mode: cannot switch to master mode Cc: linux-wireless@vger.kernel.org In-Reply-To: <1227126204.26243.62.camel@johannes.berg> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 References: <1227095773.26243.22.camel@johannes.berg> <1227109286.26243.54.camel@johannes.berg> <1227126204.26243.62.camel@johannes.berg> Sender: linux-wireless-owner@vger.kernel.org List-ID: 2008/11/19 Johannes Berg : > On Wed, 2008-11-19 at 17:23 +0100, Stefan Steuerwald wrote: > >> At first glance this improves things, but not enough. I have an ajax >> application that is polling the web server and which runs into its 5 >> sec timeouts fairly regularly. [...deleted...] > > What's your client? Is it using powersave? Anyone know whether > multicast-after-dtim works correctly in p54? Or maybe there's a bug > hitting with TIM bits? Do you have an extra card that you could use to > monitor and see what happens when it times out? I have tested multiple clients at this time with my XG-601/ISL3880 p54 card: - iPod Touch 2G with firmware 2.1.1 - Sony Vaio with a Marvell 88E8036 (Vista SP1) - Amilo Notebook with Intel 4965AGN (stock Ubuntu 8.10) - Amilo Notebook with Netgear USB-WLAN-Stick with RTL8187B (stock Ubuntu 8.10) Interestingly, only the iPod is unusable, with constant timeouts of my web-app. The other clients work 99% of the time with an _occasional_ timeout. I have multiple clients connected at the same time, and never saw a simultaneous timeout with any two clients. I have also a wired reference connection which never exhibits any timeouts. I have no clue about iPod powersave. On the 4965 and the RTL8187 it seems to be off (iwconfig output). I do have indications of "general" WLAN problems with the iPod (Apple's support forum is brimming with complaints). There may not be any AP-related problem at all. I will learn how to set up a card in monitor mode and post more info if anything looks suspicious. Thanks! Stefan.