From owner-freebsd-current@FreeBSD.ORG Wed Jul 15 01:32:45 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 92C60106566B for ; Wed, 15 Jul 2009 01:32:45 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout011.mac.com (asmtpout011.mac.com [17.148.16.86]) by mx1.freebsd.org (Postfix) with ESMTP id 48B2C8FC13 for ; Wed, 15 Jul 2009 01:32:45 +0000 (UTC) (envelope-from cswiger@mac.com) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Received: from cswiger1.apple.com ([17.227.140.124]) by asmtp011.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KMS000QLS6KW130@asmtp011.mac.com> for freebsd-current@freebsd.org; Tue, 14 Jul 2009 17:32:45 -0700 (PDT) Message-id: <129FCECB-CEC3-4E75-8543-5EA1EC06D267@mac.com> From: Chuck Swiger To: "Edwin L. Culp W." In-reply-to: <7affaed60907141654h29f748cdm95532aa83c4ac08d@mail.gmail.com> Date: Tue, 14 Jul 2009 17:32:44 -0700 References: <7affaed60907141654h29f748cdm95532aa83c4ac08d@mail.gmail.com> X-Mailer: Apple Mail (2.935.3) Cc: freebsd-current Subject: Re: Acer Laptop overheating with ACPI error that I don't understand. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Jul 2009 01:32:45 -0000 Hi-- On Jul 14, 2009, at 4:54 PM, Edwin L. Culp W. wrote: > I am having overheating problems with my Acer Aspire laptop. > # uname -a > FreeBSD ed.local.net.mx 8.0-BETA1 FreeBSD 8.0-BETA1 #256: Thu Jul 9 > 07:05:20 CDT 2009 root@ed.local.net.mx:/usr/obj/usr/src/sys/ > ENCONTACTO > i386 > > I've been having this problem for several months and compensating by > reducing dev.cpu.0.freq from 1900 to 1200 and 800 in warm offices. Presumably you should be talking to Acer-- if it overheats badly in normal operation, there's probably something wrong with a fan, temperature sensor, or something. > The errors I'm seeing in the log files are: > > +acpi_ec0: EcRead: failed waiting to get data > +ACPI Exception: AE_NO_HARDWARE_RESPONSE, Returned by Handler for > [EmbeddedControl] 20090521 evregion-531 > +ACPI Error (psparse-0633): Method parse/execution failed [\ > \_TZ_.THRM._TMP] > (Node 0xc4e75960), AE_NO_HARDWARE_RESPONSE > > I'm afraid that I don't understand them. acpi_ec0 is the embedded controller handling ACPI events. It should be responsible for adjusting active cooling measures like fan speed in response to temperature changes. See "man acpi_thermal".... Regards, -- -Chuck