From owner-freebsd-acpi@FreeBSD.ORG Sun Jun 29 18:57:39 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 3CD301065683 for ; Sun, 29 Jun 2008 18:57:39 +0000 (UTC) (envelope-from david@catwhisker.org) Received: from bunrab.catwhisker.org (adsl-63-193-123-122.dsl.snfc21.pacbell.net [63.193.123.122]) by mx1.freebsd.org (Postfix) with ESMTP id E428A8FC0A for ; Sun, 29 Jun 2008 18:57:38 +0000 (UTC) (envelope-from david@catwhisker.org) Received: from bunrab.catwhisker.org (localhost [127.0.0.1]) by bunrab.catwhisker.org (8.13.3/8.13.3) with ESMTP id m5TIvcmm019194 for ; Sun, 29 Jun 2008 11:57:38 -0700 (PDT) (envelope-from david@bunrab.catwhisker.org) Received: (from david@localhost) by bunrab.catwhisker.org (8.13.3/8.13.1/Submit) id m5TIvcVa019193 for freebsd-acpi@freebsd.org; Sun, 29 Jun 2008 11:57:38 -0700 (PDT) (envelope-from david) Date: Sun, 29 Jun 2008 11:57:38 -0700 From: David Wolfskill To: freebsd-acpi@freebsd.org Message-ID: <20080629185738.GG13924@bunrab.catwhisker.org> References: <200806281738.40672.jhb@freebsd.org> <20080629003216.3AA074500E@ptavv.es.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="4ndw/alBWmZEhfcZ" Content-Disposition: inline In-Reply-To: <20080629003216.3AA074500E@ptavv.es.net> User-Agent: Mutt/1.4.2.1i 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: Sun, 29 Jun 2008 18:57:39 -0000 --4ndw/alBWmZEhfcZ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable OK; I've managed to demonstrate a few things: * Stopping powerd before the phenomenon occurs does not prevent dev.cpu.0.freq_levels from changing, though it does appear to prevent dev.cpu.0.freq from changing: g1-60(6.3-S)[1] sysctl dev.cpu.0.freq_levels dev.cpu.0.freq dev.cpu.0.freq_levels: 1200/0 1050/0 900/0 750/0 600/0 450/0 300/0 150/0 dev.cpu.0.freq: 2400 g1-60(6.3-S)[2]=20 * As you can see, this can lead to the "interesting" situation that the current CPU frequency is higher than the maximum "available." * The phenomenon is not limited to when I run RELENG_6; in an effort to avoid the continuous fan whine, I tried running RELENG_7 for a while, and encountered a recurrence rather quickly. :-( * I tried firing up the Dell diagnostics; they reported OK for each of the CPU & motherboard fans at high speed, but when the diags tried to switch to low speed, they reported that the fans only went down (from 10-11K RPM) to about 7K RPM instead of 5K RPM. (They reported that everything else was working "optimally." Since their serial port test is known to be inadequate -- it makes no attempt to actually use the serial port to send or receive data at all -- I don't know how much that assessment is actually worth.) 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. :-( Which still leaves me wondering what type(s) of evasive actions make sense: I've become rather accustomed to using a laptop with a 1600x1200 screen, and finding another laptop similarly-equipped (but newer) at a reasoonable price that will run FreeBSD well appears to be somewhat of a challenge. I'm open to suggestions. Maybe I should just see if the local laptop repair place can fix it. :-( Peace, david --=20 David H. Wolfskill david@catwhisker.org I submit that "conspiracy" would be an appropriate collective noun for cats. See http://www.catwhisker.org/~david/publickey.gpg for my public key. --4ndw/alBWmZEhfcZ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iEYEARECAAYFAkhn2yAACgkQmprOCmdXAD3XLgCeOWHRghJTQbXBPc33IIExjb6i ODMAnjaISSBFwRWGO/fdx0pW6uATwhFP =Onnt -----END PGP SIGNATURE----- --4ndw/alBWmZEhfcZ--