From owner-freebsd-stable@FreeBSD.ORG Tue Jul 19 13:32:02 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D3F8C1065672 for ; Tue, 19 Jul 2011 13:32:02 +0000 (UTC) (envelope-from callumgibson@optusnet.com.au) Received: from fallbackmx10.syd.optusnet.com.au (fallbackmx10.syd.optusnet.com.au [211.29.132.251]) by mx1.freebsd.org (Postfix) with ESMTP id 5431C8FC0C for ; Tue, 19 Jul 2011 13:32:01 +0000 (UTC) Received: from mail05.syd.optusnet.com.au (mail05.syd.optusnet.com.au [211.29.132.186]) by fallbackmx10.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id p6JBKbAX029665 for ; Tue, 19 Jul 2011 21:20:37 +1000 Received: from omma.gibson.athome (c122-106-15-156.rivrw1.nsw.optusnet.com.au [122.106.15.156]) by mail05.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id p6JBKXpW007711 for ; Tue, 19 Jul 2011 21:20:34 +1000 Received: (qmail 51972 invoked by uid 107); 19 Jul 2011 21:20:33 +1000 Date: 19 Jul 2011 21:20:33 +1000 Date: Tue, 19 Jul 2011 21:20:33 +1000 From: Callum Gibson To: freebsd-stable@freebsd.org Message-ID: <20110719112033.GA51765@omma.gibson.athome> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-amd64@freebsd.org Subject: powernow regression in 8-STABLE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Jul 2011 13:32:02 -0000 Hi, I've just noticed and tracked down a regression in x86/cpufreq/powernow.c (on amd64) which was first mentioned here: http://lists.freebsd.org/pipermail/freebsd-current/2011-March/023509.html although no followup seems to have occurred. Symptoms are that powerd stops working because the dev.cpu.0.freq OID is no longer gettable nor settable. This seems to have been caused by the following revision: http://svnweb.freebsd.org/base?view=revision&revision=222148 which was in turn an MFC of r221102, so I guess the problem exists on -current as well, although I can't confirm that since I don't run it. Reverting the change fixes the problem and powerd will work again. Also other utilities, such as xacpim, work properly. I'm running a ML-40 Turion laptop (HP Compaq nx6125). regards, Callum -- Callum Gibson @ home http://members.optusnet.com.au/callumgibson/