From owner-freebsd-acpi@FreeBSD.ORG Mon Jun 30 23:11:04 2008 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 5A1161065674 for ; Mon, 30 Jun 2008 23:11:04 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (bigknife-pt.tunnel.tserv9.chi1.ipv6.he.net [IPv6:2001:470:1f10:75::2]) by mx1.freebsd.org (Postfix) with ESMTP id D6BB38FC23 for ; Mon, 30 Jun 2008 23:11:03 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from localhost.corp.yahoo.com (john@localhost [IPv6:::1]) (authenticated bits=0) by server.baldwin.cx (8.14.2/8.14.2) with ESMTP id m5UNAfux022830; Mon, 30 Jun 2008 19:10:42 -0400 (EDT) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-acpi@freebsd.org Date: Mon, 30 Jun 2008 15:11:11 -0400 User-Agent: KMail/1.9.7 References: <200806281738.40672.jhb@freebsd.org> <20080629003216.3AA074500E@ptavv.es.net> <20080629185738.GG13924@bunrab.catwhisker.org> In-Reply-To: <20080629185738.GG13924@bunrab.catwhisker.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200806301511.11294.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [IPv6:::1]); Mon, 30 Jun 2008 19:10:42 -0400 (EDT) X-Virus-Scanned: ClamAV 0.93.1/7596/Mon Jun 30 18:21:48 2008 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-2.0 required=4.2 tests=AWL,BAYES_00, DATE_IN_PAST_03_06,NO_RELAYS,PLING_QUERY autolearn=no version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: David Wolfskill Subject: Re: How/why would dev.cpu.0.freq_levels change??!? 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, 30 Jun 2008 23:11:04 -0000 On Sunday 29 June 2008 02:57:38 pm David Wolfskill wrote: > I still don't know what the problems are, but it's apparent that > something outside FreeBSD's control is misbehaving. Given that, I > suppose it would be unreasonable to expect FreeBSD to compensate > in an attempt to enforce rationality. :-( Are you sure it is really a problem? Presumably the machine is overheating or something that is causing the BIOS to request that the CPU speed is lowered (I wonder if Windows changes CPU speed when _PSS changes so that the BIOS writer figured changing _PSS was sufficient to force the CPU to be throttled). Presumably if the BIOS really is trying to protect the hardware not doing what it wants might result in physical damage to the machine of some sort. -- John Baldwin