From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?QmrDtnJuIEjDtmZsaW5n?= Subject: Re: ath wireless power management failure Date: Tue, 7 Feb 2017 22:39:28 +0100 Message-ID: <20170207223928.40e04367@alma-ubu> References: <87h9461ko4.fsf@elephly.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:45627) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cbDU7-0000Sz-6L for help-guix@gnu.org; Tue, 07 Feb 2017 16:39:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cbDU4-00046B-J0 for help-guix@gnu.org; Tue, 07 Feb 2017 16:39:35 -0500 Received: from m4s11.vlinux.de ([83.151.27.109]:38991) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cbDU4-000460-Bc for help-guix@gnu.org; Tue, 07 Feb 2017 16:39:32 -0500 Received: from alma-ubu (p5B3526AC.dip0.t-ipconnect.de [91.53.38.172]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by m4s11.vlinux.de (Postfix) with ESMTPSA id D66615221 for ; Tue, 7 Feb 2017 21:32:24 +0000 (UTC) In-Reply-To: <87h9461ko4.fsf@elephly.net> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+gcggh-help-guix=m.gmane.org@gnu.org Sender: "Help-Guix" To: help-guix@gnu.org Hi Ricardo, On Sun 05 Feb 2017 04:43:26 AM CET Ricardo Wurmus wrote: > GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC > https://elephly.net > Hi Guix, >=20 > since a couple of days I=E2=80=99m experiencing problems with my wireless= card > after waking up from suspend. I suspend the laptop very often, so > this is really important to me. >=20 > Upon waking up from suspend the wireless card cannot be initialised > any more. This results in a constant stream of error messages, which > can be seen in dmesg. The messages disappear when unloading all > ath-related kernel modules. Reloading the modules does not return > the network card to a workable state, so I have to reboot if I want > to connect to a wireless network (and I usually want to do that). >=20 > The error messages that appear in the log look like this: >=20 > --8<---------------cut here---------------start------------->8--- > [ 1210.998408] ath: phy0: Unable to reset channel, reset status -22 > [ 1211.078027] ath: phy0: DMA failed to stop in 10 ms > AR_CR=3D0xffffffff AR_DIAG_SW=3D0xffffffff DMADBG_7=3D0xffffffff > [ 1211.078038] ath: phy0: Could not stop RX, we could be confusing > the DMA engine when we start RX up --8<---------------cut > here---------------end--------------->8--- >=20 > (Repeat ad infinitum.) >=20 > According to ancient bug reports these messages relate to power > management problems and have been reported as fixed a long time ago. > I confirmed with =E2=80=9Ciw=E2=80=9D and =E2=80=9Ciwconfig=E2=80=9D that= power management for my WiFi > card is in fact disabled (I didn=E2=80=99t do this myself). >=20 > I see these errors with linux-libre-4.1 and linux-libre. I=E2=80=99m usi= ng > a somewhat dated Libreboot (planning to upgrade *after* FOSDEM to be > sure that my machine is usable for the presentation). >=20 > Has anyone else experienced the same behaviour? Any ideas how to fix > this? Does this just mean that my WiFi card is dying? Just curious: Is you operating system GuixSD? Do you still have an old system generation = of the time "where it worked"? Have you tried to boot into that? Bj=C3=B6rn