From owner-freebsd-acpi@FreeBSD.ORG Fri Aug 3 00:36:15 2007 Return-Path: Delivered-To: acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E27E616A41A; Fri, 3 Aug 2007 00:36:15 +0000 (UTC) (envelope-from alex.kovalenko@verizon.net) Received: from vms044pub.verizon.net (vms044pub.verizon.net [206.46.252.44]) by mx1.freebsd.org (Postfix) with ESMTP id C360013C46C; Fri, 3 Aug 2007 00:36:15 +0000 (UTC) (envelope-from alex.kovalenko@verizon.net) Received: from [10.0.3.231] ([138.89.60.152]) by vms044.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JM6003X49O6RYT5@vms044.mailsrvcs.net>; Thu, 02 Aug 2007 19:36:07 -0500 (CDT) Date: Thu, 02 Aug 2007 20:35:59 -0400 From: "Alexandre \"Sunny\" Kovalenko" In-reply-to: <46B20F91.5080709@root.org> To: Nate Lawson Message-id: <1186101359.846.12.camel@RabbitsDen> MIME-version: 1.0 X-Mailer: Evolution 2.10.3 FreeBSD GNOME Team Port Content-type: text/plain Content-transfer-encoding: 7bit References: <46AE58B5.3080506@gahr.ch> <46AE8F78.1060203@root.org> <20070801.211718.1683324313.imp@bsdimp.com> <46B20F91.5080709@root.org> Cc: acpi@freebsd.org, freebsd-hackers@freebsd.org, ume@freebsd.org, gahr@gahr.ch Subject: Re: [patch] enhance powerd(8) to handle max temperature 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: Fri, 03 Aug 2007 00:36:16 -0000 On Thu, 2007-08-02 at 10:08 -0700, Nate Lawson wrote: > M. Warner Losh wrote: > > In message: <46AE8F78.1060203@root.org> > > Nate Lawson writes: > > : Hajimu UMEMOTO wrote: > > : >>>>>> On Mon, 30 Jul 2007 23:31:33 +0200 > > : >>>>>> Pietro Cerutti said: > > : > gahr> My patch is really just a first draft that I wrote in order to have > > : > gahr> feedbacks on the general idea to implement a temperature controlling > > : > gahr> system inside powerd, and doesn't implement hysteresis as you noted, and > > : > gahr> your feedback is that it's not a good idea, which I respect. > > : > > > : > It is rather backward, IMHO. I did implement a passive cooling > > : > feature as an enhancement of powerd(8) like you did, during initial > > : > phases. Then, I implemented it in our kernel as a result. > > : > > : I'll take a look at your patch. Umemoto-san is right in that you really > > : want the kernel to control cooling. What happens if powerd dies/hangs > > : and your system burns up? Passive cooling is often a last resort to > > : keep the system from overheating. > > > > I keep getting the system shutting down on my HP by FreeBSD because > > the temperature exceeds the _CRT value. Maybe there's something wrong > > with my values, since it happens a lot: > > > > hw.acpi.thermal.min_runtime: 0 > > hw.acpi.thermal.polling_rate: 10 > > hw.acpi.thermal.user_override: 0 > > hw.acpi.thermal.tz0.temperature: 0.0C > > hw.acpi.thermal.tz0.active: -1 > > hw.acpi.thermal.tz0.passive_cooling: 1 > > hw.acpi.thermal.tz0.thermal_flags: 0 > > hw.acpi.thermal.tz0._PSV: 90.0C > > hw.acpi.thermal.tz0._HOT: -1 > > hw.acpi.thermal.tz0._CRT: 94.0C > > hw.acpi.thermal.tz0._ACx: 40.0C -1 -1 -1 -1 -1 -1 -1 -1 -1 > > > > Note: temperature is always 0.0C. > > > > What can I do to help my situation, if I really want the kernel doing > > the cooling? > > Your embedded controller is timing out. Thus you're getting a bogus > value for _TMP. I have sort of picked up this thread in the middle... was it determined that EC is timing out? The reason for asking is -- I used to have a laptop where _TMP would just read value from the memory location, which was never populated anywhere else in ASL. Call to _PSV method would go figure current temperature and start fan, if necessary. Ugly... Dumping ASL (using instructions from handbook) and looking for something like Method (_TMP, 0, NotSerialized) might be a real eye opener. If you would like me to take a look at your ASL, send it to me privately -- I've only done it for one laptop, so no claims of the great skill there, but maybe it is as simple as the other one ;) -- Alexandre "Sunny" Kovalenko