From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from llsb708-a03.servidoresdns.net ([82.223.190.29]:46559 "EHLO llsb708-a03.servidoresdns.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752712Ab0ANTEq (ORCPT ); Thu, 14 Jan 2010 14:04:46 -0500 Subject: Re: ath9k/AR9285 - incompatibility with bluetooth From: Alberto =?ISO-8859-1?Q?Jos=E9_Rodr=EDguez_?= =?ISO-8859-1?Q?Rodr=EDguez?= To: Dan Williams Cc: linux-wireless@vger.kernel.org In-Reply-To: <1263492165.31774.13.camel@localhost.localdomain> References: <1263494975.4643.15.camel@eclipse> <1263492165.31774.13.camel@localhost.localdomain> Content-Type: text/plain; charset="UTF-8" Date: Thu, 14 Jan 2010 19:56:15 +0000 Message-Id: <1263498975.4643.61.camel@eclipse> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: Thanks for your response. I made this question because while this device loses the connection, on my laptop, with the same bluetooth device, the connection is not affected. 03:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100 El jue, 14-01-2010 a las 10:02 -0800, Dan Williams escribió: > On Thu, 2010-01-14 at 18:49 +0000, Alberto José Rodríguez Rodríguez > wrote: > > Hellow, > > I have a ZOTAC MAG ION and I'm having problems with wireless > > connections > > > > Distribution: Ubuntu 9.10 > > Kernel version: 2.6.31-16 > > Device: 04:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) > > Problem Description: > > - Low signal strength > > - Cannot connect to wireless networks > > Using linux-backports-modules-karmic: > > - Low signal strength persists > > - Can connect to WPA networks but signal strengh is low and unstable, also when using at the same time a Bluetooth USB dongle (continuously inquiring) the wireless connection is lost. > > - Cannot connect to WEP networks, although the WEP key is set correctly and the device is associated to the AP > > Using latest linux-wireless snapshot (20100113): > > - Can connect to WEP networks but when I use at the same time a Bluetooth USB dongle (continuously inquiring) the speed of the wireless connection becomes very slow. > > - Can connect to WPA networks but when I use at the same time a Bluetooth USB dongle (continuously inquiring) the wireless connection is lost. > > This isn't unexpected; Bluetooth and WiFi interfere with each other > because they both use 2.4GHz. So don't expect great performance out of > either BT or WiFi when you're using both at the same time. Many > built-in chips have BT co-existence capability, but that only works if > both the WiFi and BT chips are built into your computer and are wired up > to talk to each other. External USB BT or WiFi dongles almost certainly > will not have working coexistence support. > > Dan > > -- Alberto José Rodríguez Rodríguez BluLabs, S.L.