From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1OSmC9-00052y-0m for garchives@archives.gentoo.org; Sun, 27 Jun 2010 07:22:25 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 0E54DE0887; Sun, 27 Jun 2010 07:21:34 +0000 (UTC) Received: from mail-wy0-f181.google.com (mail-wy0-f181.google.com [74.125.82.181]) by pigeon.gentoo.org (Postfix) with ESMTP id B2A5BE0887 for ; Sun, 27 Jun 2010 07:21:33 +0000 (UTC) Received: by wyg36 with SMTP id 36so603572wyg.40 for ; Sun, 27 Jun 2010 00:21:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:reply-to:to:subject:date :user-agent:references:in-reply-to:mime-version:content-type :content-transfer-encoding:message-id; bh=L8fZZWVUMfwUnf4v3wQW5ZMuIwLhUCPB1G4dUwHCyjU=; b=Jx/96gep+2Fs9oYHge0RYWG+9NekqsnsJW7q/ZxfWFlfAlIQbM6Kq4WHXUmzhMQugc jj2Ys3oT17HBAsuY7jLBs1HGe7DTdiw2kwX75OGljKCWKn8++GXm0QYQ7zdAzhxyz20v aEV0WS6cWgaNcdIShAopHCvYlefksQT2kPY7A= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:reply-to:to:subject:date:user-agent:references:in-reply-to :mime-version:content-type:content-transfer-encoding:message-id; b=muv4iWiFOHoifRU5/x9PXLeWUvDK9hdLqQi7I28kVi4+HtSJcvpO/vIwo1UsFuPGRv 1pnzU9s4MVNqZY20sIWFsLiK54Kz0ee8FNSuEtCCj5MwLNlYxd+vKBnVMxbGgj93SKJt 8nyjQzfr/moYQXovCosAbyXPpS7OjHP4huduQ= Received: by 10.216.162.80 with SMTP id x58mr6795141wek.85.1277623293104; Sun, 27 Jun 2010 00:21:33 -0700 (PDT) Received: from (230.3.169.217.in-addr.arpa [217.169.3.230]) by mx.google.com with ESMTPS id o3sm1326601wee.14.2010.06.27.00.21.32 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sun, 27 Jun 2010 00:21:32 -0700 (PDT) From: Mick To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Atheros WLAN loosing link Date: Sun, 27 Jun 2010 08:21:19 +0100 User-Agent: KMail/1.13.3 (Linux/2.6.33-gentoo-r2; KDE/4.4.4; x86_64; ; ) References: <20100625175218.GA21445@nibiru.local> <201006261335.39095.michaelkintzios@gmail.com> <201006270755.31765.nagatoro@gmail.com> In-Reply-To: <201006270755.31765.nagatoro@gmail.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2574147.zofrEK6EVy"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <201006270821.31987.michaelkintzios@gmail.com> X-Archives-Salt: c96d2ac0-828f-4f0e-a3af-4b0e8ea086a5 X-Archives-Hash: 86789490967cb936b7e3239fb1eb3adc --nextPart2574147.zofrEK6EVy Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable On Sunday 27 June 2010 06:55:31 Nagatoro wrote: > On Saturday 26 June 2010 14.35.28 Mick wrote: > > On Friday 25 June 2010 18:52:18 Enrico Weigelt wrote: > > > Hi folks, > > >=20 > > >=20 > > > my Atheros wlan (builtin, internal intenna) is regularily > > > loosing link. Reproducible in various different networks. > > > At home, my wlan ap is about 2 meter away (within the room), > > > so link quality (currently 53) shouldnt be the problem. > > >=20 > > > Does anyone know what could cause the problem ? > > >=20 > > > # cat /proc/version > > >=20 > > > Linux version 2.6.31-gentoo-r10 (root@excalibur.local) \ > > > (gcc version 4.3.4 (Gentoo 4.3.4 p1.0, pie-10.1.5) ) \ > > > #1 SMP Wed Jun 2 00:51:13 CEST 2010 > > >=20 > > > # lspci -v > > > ... > > >=20 > > > 02:00.0 Network controller: Atheros Communications Inc. AR9285 Wirele= ss > > > Network Adapter (PCI-Express) (rev 01) Subsystem: Askey Computer Corp. > > > Device 7167 > > >=20 > > > Flags: bus master, fast devsel, latency 0, IRQ 16 > > > Memory at f6000000 (64-bit, non-prefetchable) [size=3D64K] > > > Capabilities: [40] Power Management version 3 > > > Capabilities: [50] MSI: Enable- Count=3D1/1 Maskable- 64bit- > > > Capabilities: [60] Express Legacy Endpoint, MSI 00 > > > Capabilities: [100] Advanced Error Reporting > > > Capabilities: [140] Virtual Channel > > > Capabilities: [160] Device Serial Number 00-15-17-ff-ff-24-14-12 > > > Capabilities: [170] Power Budgeting > > > Kernel driver in use: ath9k > > > Kernel modules: ath9k > > >=20 > > > ... > > >=20 > > >=20 > > > Jun 25 19:36:51 excalibur kernel: wlan0: no probe response from AP > > > 00:23:08:86:d6:8f - disassociating Jun 25 19:36:51 excalibur > > > dhcpcd[10182]: wlan0: carrier lost > >=20 > > I have seen the same problem with my internal broadcom card and of cour= se > > a different driver. If you check google there seem to be pages and > > pages of users reporting such a problem on different distros and with > > different makes of wireless cards. > >=20 > > The jury's out as to what's causing this. Is it related to modern cards > > with low power management capabilities and how this may interact with t= he > > kernel, or is it something to do with the tolerance built into TTL > > packets between the card and the AP? > >=20 > > With regards to my card I have noticed that at home I stay connected for > > hours on end, at work it's a miracle if I stay online for longer than 5 > > minutes (both on the same channel). This to me says that the problem is > > one of interaction with the router, which points to tolerance on the TTL > > packets. > >=20 > > Of course YMMV ... >=20 > Last time I had this problem I tracked it to a conflict between > wpa_supplicant and the card driver. Basicly the card driver would send a > request to assosiate with mac 00:00:....:00 each time a new card was found > on the air and wpa_supplicatnt interpreted this as a request from the > driver to drop the connection. The driver folks said that this request > should be ignored and the wpa_supplicant folks said that this should not > be ignored but instead was a disconnect request. Catch 22... >=20 > Because of this I had to use wep instead of wpa(2) for along time. I seem to recall this as a problem too, although not in my case. At work=20 there is no encryption and despite this the connection keeps dropping, whil= e=20 at home I use WPA2. =2D-=20 Regards, Mick --nextPart2574147.zofrEK6EVy Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) iEYEABECAAYFAkwm+/sACgkQVTDTR3kpaLa2IgCgv5Tua6xNvqBWfmrJ/mbUb8l3 t8MAnRZzMc8EWA/yBc5Js8MfOWsaDGxj =1v+r -----END PGP SIGNATURE----- --nextPart2574147.zofrEK6EVy--