Return-path: Received: from qw-out-2122.google.com ([74.125.92.25]:47449 "EHLO qw-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755075Ab0DCRwu convert rfc822-to-8bit (ORCPT ); Sat, 3 Apr 2010 13:52:50 -0400 Received: by qw-out-2122.google.com with SMTP id 8so988444qwh.37 for ; Sat, 03 Apr 2010 10:52:50 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <4BB77C03.7040209@lwfinger.net> References: <4BB7660A.3030900@lwfinger.net> <4BB773A9.2070703@lwfinger.net> <4BB77C03.7040209@lwfinger.net> Date: Sat, 3 Apr 2010 14:52:49 -0300 Message-ID: Subject: Re: RTL 8187b - naughty behaviour From: Rogerio Luz Coelho To: Larry Finger Cc: linux-wireless@vger.kernel.org, Herton Ronaldo Krzesinski Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: 2010/4/3 Larry Finger : > On 04/03/2010 12:04 PM, Rogerio Luz Coelho wrote: >> 2010/4/3 Rogerio Luz Coelho : >>> 2010/4/3 Larry Finger : >>>> On 04/03/2010 11:49 AM, Rogerio Luz Coelho wrote: >>>>> >>>>> I have a MS-Win7 instalation on this Laptop and it works 100% even at >>>>> longer distances than you report,even with walls in between. >>>>> >>>>> Will do the tcpperf test as soon as I get home. There are other with >>>>> the same problem with my exact chip here in Brasil , that is because >>>>> one of our leading Laptop vendors uses this config. >>>> >>>> What is the exact make and model of the device? It might be difficult >>>> for me to get one in the US, but one of the rtl8187 developers lives in >>>> Brazil. He should be able to find one. >>>> >>> >>> Itæ„€ a POSITIVO R430L - Core 2 Duo 4GB RAM > > This sounds like a computer model. Does the RTL8187B have a separate > make/model? > >>>>> Does it matter that the USB port used in this setting is a connected >>>>> to a USB HUB and then to the mother board? >>>> >>>> Is the hub passive, or is it powered? If the hub is good and not >>>> underpowered, it should be OK. >> >> Have no idea ... how do I find this out? > > Does it have a +5 V power cord connected to the mains? If so, it is > powered. If not, it is passive and all devices that are plugged get > their power from the computer port. If the hub is internal, then it is > likely powered. > > Larry > Inernal ... powered then Rogerio