From owner-freebsd-acpi@FreeBSD.ORG Tue May 1 19:26:07 2007 Return-Path: X-Original-To: freebsd-acpi@freebsd.org Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id CA1BF16A401 for ; Tue, 1 May 2007 19:26:07 +0000 (UTC) (envelope-from anderson@freebsd.org) Received: from mh1.centtech.com (moat3.centtech.com [64.129.166.50]) by mx1.freebsd.org (Postfix) with ESMTP id 9D2F513C459 for ; Tue, 1 May 2007 19:26:05 +0000 (UTC) (envelope-from anderson@freebsd.org) Received: from neutrino.centtech.com (neutrino.centtech.com [10.177.171.220]) by mh1.centtech.com (8.13.8/8.13.8) with ESMTP id l41JQ4dM081930; Tue, 1 May 2007 14:26:04 -0500 (CDT) (envelope-from anderson@freebsd.org) Message-ID: <4637944C.5000709@freebsd.org> Date: Tue, 01 May 2007 14:26:04 -0500 From: Eric Anderson User-Agent: Thunderbird 2.0.0.0 (X11/20070420) MIME-Version: 1.0 To: Nate Lawson References: <4630BCC4.10601@freebsd.org> <4637860D.8060603@freebsd.org> <46378F75.6020007@root.org> In-Reply-To: <46378F75.6020007@root.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.88.4/3189/Tue May 1 11:02:13 2007 on mh1.centtech.com X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=8.0 tests=AWL,BAYES_00 autolearn=ham version=3.1.6 X-Spam-Checker-Version: SpamAssassin 3.1.6 (2006-10-03) on mh1.centtech.com Cc: freebsd-acpi@freebsd.org Subject: Re: CPU temp AC vs Battery 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: Tue, 01 May 2007 19:26:07 -0000 On 05/01/07 14:05, Nate Lawson wrote: > Eric Anderson wrote: >> On 04/26/07 09:52, Eric Anderson wrote: >>> Hi everyone, >>> >>> I've just noticed something very odd. On my Dell D820 laptop, when >>> running off AC power from boot, by idle CPU temperature sits around 58C. >>> >>> If I unplug the power, and then plug it back in again, it will drop >>> down to around 49-50C within a minute or two. It will stay there. >>> With or without powerd running. >> >> Another note: >> >> If I boot up without the AC adapter plugged in, it still runs hot. Only >> the transition from AC -> battery seems to make a difference. >> >> Anyone with some ideas?? > > Does the temp change at all or is it stuck at 58C? If stuck, maybe the > reading is incorrect and something in the AC line transition kicks the > EC back into operation. The temp does change, about 10C. > If it changes, then perhaps something is generating a lot of interrupts > (perhaps SMI or SCI irqs). More debug prints from the acpi-ca Notify > routine caller would help zero in. > Just add some printfs in there and recompile/reboot? Eric