From owner-freebsd-acpi@FreeBSD.ORG Mon Oct 1 18:41:20 2007 Return-Path: Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A789C16A418 for ; Mon, 1 Oct 2007 18:41:20 +0000 (UTC) (envelope-from merlyn500@gmail.com) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.190]) by mx1.freebsd.org (Postfix) with ESMTP id 2E46113C49D for ; Mon, 1 Oct 2007 18:41:19 +0000 (UTC) (envelope-from merlyn500@gmail.com) Received: by nf-out-0910.google.com with SMTP id b2so2692451nfb for ; Mon, 01 Oct 2007 11:41:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:from:to:subject:date:user-agent:cc:references:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:message-id; bh=+l9AozR+SlJuEtTVuJl7QlnOocUqHL1Nc7N1HlU9eVc=; b=EaJI46vqXQqzRk4ql4KcQuH/rz+2lq8GyBHHavPtjkuCK1GHn8yHp4VLzdEVu3qP162KUgCtBo8HWXgtXdaKO43MCv8/9UuHGszia4/JRMJ7uqiqC178z/sWXGHT44fAI4/R+SftvGFdfRrmmhVZrt+w5X73BLzJzZoIBjH4dsc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:from:to:subject:date:user-agent:cc:references:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:message-id; b=o9fFmXxaU6zokbDFtTV7sU+TvjlADLV3m3UQL64hzo53nUu1wO/42RGrdjnKUo7lNocZmW1MYAVXsW6/O3400qF80hCpIx7Wf+wIU/PBM3wOKSgKD18IdSVluMpnq6T4ayd+e3hRFbMiym+WBmnYo56sxMTu8NZzP20nHXdJyrI= Received: by 10.78.118.5 with SMTP id q5mr3357220huc.1191264078125; Mon, 01 Oct 2007 11:41:18 -0700 (PDT) Received: from vallhala.mshome.net ( [85.160.212.180]) by mx.google.com with ESMTPS id h6sm408196nfh.2007.10.01.11.41.15 (version=SSLv3 cipher=OTHER); Mon, 01 Oct 2007 11:41:16 -0700 (PDT) From: Milan Bartos To: "Kevin Oberman" Date: Mon, 1 Oct 2007 20:40:27 +0200 User-Agent: KMail/1.9.7 References: <20071001181852.879B645010@ptavv.es.net> In-Reply-To: <20071001181852.879B645010@ptavv.es.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200710012040.28160.merlyn500@gmail.com> Cc: freebsd-acpi@freebsd.org Subject: Re: Prestigio Nobile 157 ACPI - overheating X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Oct 2007 18:41:20 -0000 Thank you very much for this comprehensive information about processors. I will try clean my laptop (he is more than 2 years old). And i will be calmer (quieter ?). So once again thank for Your instructions and Your time. Milan Dne Monday 01 of October 2007 20:18:52 Kevin Oberman napsal(a): > > From: Milan Bartos > > Date: Mon, 1 Oct 2007 19:03:15 +0200 > > Sender: owner-freebsd-acpi@freebsd.org > > > > Hi. I have laptop Prestigio Nobile 157 and i am running 6.2-STABLE. > > Kernel is GENERIC. I have my proc dev.cpu.0.freq=1000 to have temperature > > about 54 Celsius. If a have dev.cpu.0.freq=1700, temperature is over 70 > > Celsius. Is this bug, unsuported acpi device or attribute my laptop? > > My dmesg following: > > [-snip-] > > > Please, help me, all you will need (some sysctls or anything else) i > > will send you. > > OK. People need to learn a bit about the normal temperatures of modern > CPUs (as well as how they are measured). > > You have a 1.6GHz Pentium-M. The CPU temperature is measured on the > silicon by a single junction that is tied to two pins on the > package. The temperature you see is going to be higher than whet you saw > on many older systems with a temperature sensor mounted under the CPU in > the socket. These showed a lower temperature due to the combination of > convection and thermal conduction. > > Your CPU is most likely a 735. If so, it is speced for operation to 100C > and thermal shutdown forced at 125C. 70C is not really all that hot. My > system tends to idle at about 55C and, during a big build > (e.g. buildworld or openoffice.org) will climb to about 85C. This is higher > than I used to see, but I suspect I need to remove the keyboard and > clean the heat sink. Dust accumulation can really impact thermal > transfer and the laptop is now 2.5 years old. > > Really, what you are seeing is pretty normal. You can see what the > vendor thought was too hot by looking at 'sysctl hw.sysctl.thermal'. > Look at values for PSV and CRT. PSV is when the system should start > aggressive thermal control by forcing the performance down. CRT is when > the systems should alarm and, depending on configuration, start a > shutdown. > > On my 2G Pentium-M I see: > hw.acpi.thermal.tz0._PSV: 94.5C > hw.acpi.thermal.tz0._CRT: 99.0C > > So even 80C is not excessive. Just very uncomfortable if you really have > the laptop on your lap.