From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261784AbULJSSf (ORCPT ); Fri, 10 Dec 2004 13:18:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261794AbULJSSe (ORCPT ); Fri, 10 Dec 2004 13:18:34 -0500 Received: from got80-74-137-2.ch-meta.net ([80.74.137.2]:47582 "EHLO gothicus.metanet.ch") by vger.kernel.org with ESMTP id S261784AbULJSS0 (ORCPT ); Fri, 10 Dec 2004 13:18:26 -0500 From: Thomas Bettler To: linux-kernel@vger.kernel.org, linux-laptop@vger.kernel.org Subject: module uhci-hcd and pm Date: Fri, 10 Dec 2004 19:18:14 +0100 User-Agent: KMail/1.7.2 References: <200412091447.11996.bettlert@student.ethz.ch> In-Reply-To: <200412091447.11996.bettlert@student.ethz.ch> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1216614.ZKd03Oksu9"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200412101918.24191.bettlert@student.ethz.ch> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --nextPart1216614.ZKd03Oksu9 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hello you all The uhci-hcd module causes the cpu to work at highest frequecy (according to x86info -mhz). If I unload it, cpu frequency dropps from full (1.8GHz) to ~2/3 (1.1GHz). In both cases top shows 97% or even 99% idle. modprobing it again speeds the cpu up again. So module uhci-hcd prehibits the cpu clock from saving power on notebooks. = (At=20 least theese with P4-M cpus) What code forces the cpu to run at high speed? Can I tweak the module to=20 permit slower cpu speed? Thomas Bettler --nextPart1216614.ZKd03Oksu9 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQBBuehvePDD0plw9EYRAiNLAJ9oUnPfEkAfDRwkjZuUj3UPZq+JKQCgxyJk Jbv6WGlItHQpxSz9fs9+IT8= =0I7S -----END PGP SIGNATURE----- --nextPart1216614.ZKd03Oksu9--