From owner-freebsd-acpi@FreeBSD.ORG Sun Apr 4 15:53:49 2010 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 6C88F1065674 for ; Sun, 4 Apr 2010 15:53:49 +0000 (UTC) (envelope-from freebsd@chillt.de) Received: from dd15624.kasserver.com (dd15624.kasserver.com [85.13.136.215]) by mx1.freebsd.org (Postfix) with ESMTP id 288FD8FC0C for ; Sun, 4 Apr 2010 15:53:48 +0000 (UTC) Received: from taiko.lan (84-203-79-36.mysmart.ie [84.203.79.36]) by dd15624.kasserver.com (Postfix) with ESMTP id 620D42C06A840; Sun, 4 Apr 2010 17:53:47 +0200 (CEST) Message-ID: <4BB8B603.60902@chillt.de> Date: Sun, 04 Apr 2010 16:53:39 +0100 From: Bartosz Fabianowski User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.1.9) Gecko/20100403 Thunderbird/3.0.4 MIME-Version: 1.0 To: "Alexandre \"Sunny\" Kovalenko" References: <4BB69279.6060005@chillt.de> <20100403152134.V35463@sola.nimnet.asn.au> <4BB74BC4.9070409@chillt.de> <20100404012906.I35463@sola.nimnet.asn.au> <1270308642.1455.10.camel@RabbitsDen> <4BB764CC.60500@chillt.de> <1270334546.1455.45.camel@RabbitsDen> <4BB7C937.9050106@chillt.de> <1270337076.1455.60.camel@RabbitsDen> <4BB7D71C.7080303@chillt.de> <1270341153.1455.81.camel@RabbitsDen> In-Reply-To: <1270341153.1455.81.camel@RabbitsDen> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Cc: freebsd-acpi@freebsd.org, Ian Smith Subject: Re: Spurious thermal shutdowns on Dell Studio 1557 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: Sun, 04 Apr 2010 15:53:49 -0000 > If you still have old kernel, you can try booting it and looking at > the system performance with some kind of CPU-bound benchmark. Unfortunately, the old kernel is long gone. > Theoretically, your laptop should be able to run with CPU stuck at > its highest frequency without shutting down. I agree. This is precisely what I am trying to achieve. > ISTR there are few CPU frequency drivers that could use some > disabling. Disabling p4tcc changed nothing. Disabling apci_throttle as well finally reduced the frequencies from 13 to 6. I have yet to see what effect this will have on system performance. > Does 'hw.acpi.thermal.tz1.active' show value of '0' an this point? > Does it go back to '1' when temperature drops below 71C? Does it ever > show '-1'? The value varies between 0 and 1. When the machine is idling, temperature tends to drop to 55°C and then hover there. As this is exactly the lowest _ACx threshold, active stays at 0. Just as I was writing this e-mail, the temperature finally reached 54°C and active went to -1. The fan is still on, however. - Bartosz