From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?TWFydGluIEh1bmRlYsO4bGw=?= Subject: Re: ACPI errors on Dell Latitude E5430 Date: Wed, 03 Oct 2012 13:48:57 +0200 Message-ID: <506C2629.30902@hundeboll.net> References: <5069E332.9060109@redhat.com> <506AB25D.7000900@hundeboll.net> <506ACCA1.6030908@redhat.com> <506BDCE1.4050007@hundeboll.net> <506C16BF.70100@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail.hundeboll.net ([95.211.44.99]:58837 "EHLO mail.hundeboll.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753611Ab2JCLtc (ORCPT ); Wed, 3 Oct 2012 07:49:32 -0400 In-Reply-To: <506C16BF.70100@redhat.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Hans de Goede Cc: linux-acpi , Matthew Garrett On 2012-10-03 12:43, Hans de Goede wrote: > Hi, > > On 10/03/2012 08:36 AM, Martin Hundeb=C3=B8ll wrote: >> On 2012-10-02 13:14, Hans de Goede wrote: >>> Hi, >>> >>> On 10/02/2012 11:22 AM, Martin Hundeb=C3=B8ll wrote: >>>> Hi Hans, >>>> >>>> On 2012-10-01 20:38, Hans de Goede wrote: >>>>> 2) Even with a 3.6 which shows the problematic behavior, I can >>>>> make things work by adding acpi.ec_delay=3D2000 to the kernel cmd= line, >>>>> the debug traces show that the EC takes it sweet time to respond >>>>> (sometime close to 2 seconds) but it does eventually respond in a= ll >>>>> cases I've seen sofar. >>>>> >>>>> This also seems to fix a sporadic occurence of: >>>>> "ACPI: EC: input buffer is not empty aborting transaction" >>>>> Which I'm seeing with 3.5 / 3.6 in a non debug build. >>>>> >>>>> Martin, can you see if adding that helps you with the E5430 probl= ems >>>>> too ? >>>> >>>> As far as I can tell from the attached dmesg, the errors are gone >>>> after setting acpi.ec_delay=3D2000. Thanks a lot! >>>> >>>> The only remaining issue is the fan control, which works as expect= ed >>>> initially, but then fails to spin down after a few minutes. >>> >>> Hmm, I'm seeing the same thing, but only when charging my battery, = and >>> then indeed >>> does not spin down completely, but it does step down from vacuum cl= eaner >>> mode to >>> something more pleasant after the machine was loaded for a while an= d >>> returns back >>> to idle. >>> >>> Also it spins up to its slowest speed by jut using the charger, so = I >>> think it is >>> just bleeding of heat caused by the charging hardware in this case = (for >>> me). >> >> For the record, my fan keeps spinning also when on battery (as >> reported by i8k/sensors): >> >> i8k-virtual-0 >> Adapter: Virtual device >> Right Fan: 84000 RPM >> CPU: +39.0C >> >> This is not a total show-stopper, but nevertheless quite annoying wh= en >> the home-office is shared with the bedroom :) > > Ah right, you added acpi_enforce_resources=3Dlax to get i8k to work, > right, hint: > DO NOT DO THAT! > > See: > http://lm-sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkingin= kernel2.6.31 Unfortunately, no. I only tried those paramters to see no effect and=20 thus removed them again before sending my initial mail. The description= =20 in my previous mail was given with only: cat /proc/cmdline BOOT_IMAGE=3D/boot/vmlinuz-linux=20 root=3DUUID=3Def14a89c-443d-4d51-99b8-bff7a90f1015 ro quiet acpi.ec_del= ay=3D2000 Thanks again! --=20 Kind Regards Martin Hundeb=C3=B8ll =46rederiks All=C3=A9 99, 1.th 8000 Aarhus C Denmark +45 61 65 54 61 martin@hundeboll.net -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html