From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753080Ab2FTGxJ (ORCPT ); Wed, 20 Jun 2012 02:53:09 -0400 Received: from mga11.intel.com ([192.55.52.93]:47263 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750754Ab2FTGxH (ORCPT ); Wed, 20 Jun 2012 02:53:07 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="182552078" Message-ID: <1340175285.1682.26.camel@rui.sh.intel.com> Subject: Re: thermal_zone trip_point_0_temp =?ISO-8859-1?Q?200=B0C?= From: Zhang Rui To: Mark Cc: Clemens Ladisch , linux-kernel@vger.kernel.org Date: Wed, 20 Jun 2012 14:54:45 +0800 In-Reply-To: <4FDB49EC.6030806@gmail.com> References: <4FC9D021.1030207@ladisch.de> <1338778611.1472.265.camel@rui.sh.intel.com> <4FCCC92B.3080809@gmail.com> <1338947674.1492.33.camel@rui.sh.intel.com> <4FDB49EC.6030806@gmail.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.2 (3.2.2-1.fc16) Content-Transfer-Encoding: 8bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 五, 2012-06-15 at 10:42 -0400, Mark wrote: > Hi Rui, > > thanks for writing; apologies for the delay I've been coping with some bizarre > communications from AMD who won't even state thermal specifications for the cpu, > while 'passing the buck' to Acer who are slippery customers — various methods of > avoiding giving technical support worthy of the name — too :-) > > On 06/05/2012 09:54 PM, Zhang Rui wrote: > > you can use module parameter thermal.crt= to override the critical trip > > point. > > But I'm not sure if kernel should set a default upper limit or not. > > Maybe we need another entry for this laptop in thermal_dmi_table. > thanks, sounds worth a try; at least to prevent a fire :-D > > > >> there are 2-3 symbols in the ACPI that may be relevant, FANG, FANW, possibly > >> FANU; I attach the relevant files > > FANG/FANW/FANU can be used for fan control? > > I do not know what these mean as they are not ACPI pre-defined control > > method. > > But if all the Aspires machines follow the same rule, then maybe we need > > a kernel Acer platform driver that handles this. > I'm simply conjecturing for now, that the letters 'FAN' may be relevant, you're > the specialist though :-) No, I only cares about the ACPI pre-defined control methods, which means their behaviors have been defined in ACPI spec. Actually, platforms can write whatever AML code, use whatever names, for their own purpose. so I know nothing more than you on this. > > thanks, > > rui > AMD suggested a channel that would seem designed more for people whose Email > address is '@acer.com' / '@kernel.org', possibly '@intel.com' than people such as > me '@gmail.com' :-D > > http://support.amd.com/us/contacts/Pages/EmbeddedTechnicalSupport.aspx > > My question would be, what *is* the thermal range for the Phenom II N970 Mobile > CPU, reference HMN970DCR42GM ? > conspicuously absent from http://products.amd.com/en-us/NotebookCPUDetail.aspx?id=733 > Sorry, I do not know. I can not help you on this. :( thanks, rui > Aside from the question of whether they've got some technical contact at Acer who > could verify how — presumably some hardware registers that are somehow accessible > to the OS — windows seems to manage to keep the CPU relatively cool / fan > management in the Aspire 5552-7260 > > Best regards > > Mark >