From owner-freebsd-mobile@FreeBSD.ORG Wed Oct 10 23:26:02 2007 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 20D9116A41B for ; Wed, 10 Oct 2007 23:26:02 +0000 (UTC) (envelope-from freebsd@meijome.net) Received: from sigma.octantis.com.au (ns2.octantis.com.au [207.44.189.124]) by mx1.freebsd.org (Postfix) with ESMTP id C3C5C13C478 for ; Wed, 10 Oct 2007 23:26:01 +0000 (UTC) (envelope-from freebsd@meijome.net) Received: (qmail 12228 invoked from network); 10 Oct 2007 18:26:02 -0500 Received: from 124-170-228-57.dyn.iinet.net.au (HELO localhost) (124.170.228.57) by sigma.octantis.com.au with (DHE-RSA-AES256-SHA encrypted) SMTP; 10 Oct 2007 18:26:01 -0500 Date: Thu, 11 Oct 2007 09:25:57 +1000 From: Norberto Meijome To: Mel Message-ID: <20071011092557.5ffebba1@meijome.net> In-Reply-To: <200710101459.05867.fbsd.mobile@rachie.is-a-geek.net> References: <20071008172756.2aed69e7@meijome.net> <20071008173604.1e449ca2@meijome.net> <20071008111601.kfrb6qt8isw4owc0@0x20.net> <200710101459.05867.fbsd.mobile@rachie.is-a-geek.net> X-Mailer: Claws Mail 3.0.2 (GTK+ 2.10.14; i386-portbld-freebsd6.2) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Lars Engels , freebsd-mobile@freebsd.org Subject: Re: Management of Thermal X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Oct 2007 23:26:02 -0000 On Wed, 10 Oct 2007 14:59:05 +0200 Mel wrote: > Experience with a HP laptop shows this to be not true. It currently is working > perfectly with a laptop cooling pad and not going anywhere near critical > values, but before that, we had to use the following in /etc/sysctl.conf to > prevent the computer from locking up (I suspect that the Intel CPU shuts > itself down before burning out): > hw.acpi.thermal.user_override=1 > hw.acpi.thermal.tz0._PSV="75C" > hw.acpi.thermal.tz0._CRT="80C" > > These values are 5C lower then detected values. I started with 10C lower and > reached critical too early. 5C works perfectly. Logging the temp[1] each > minute I could see the effect of the cooling fans once it reached 75C. Hi Mel, from man acpi_thermal hw.acpi.thermal.tz%d._PSV Temperature to start passive cooling by throttling down CPU, etc. This value can be overridden by the user. which implies is at what temperature it'll use methods other than the fans to cool down. Your experience seems to contradict this (*._PSV = temperature at which fans kick in) ? thanks, B _________________________ {Beto|Norberto|Numard} Meijome "Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read." Groucho Marx I speak for myself, not my employer. Contents may be hot. Slippery when wet. Reading disclaimers makes you go blind. Writing them is worse. You have been Warned.