From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754143Ab3DMXqw (ORCPT ); Sat, 13 Apr 2013 19:46:52 -0400 Received: from filtteri6.pp.htv.fi ([213.243.153.189]:37950 "EHLO filtteri6.pp.htv.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753511Ab3DMXqv (ORCPT ); Sat, 13 Apr 2013 19:46:51 -0400 Date: Sun, 14 Apr 2013 02:46:46 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: Jake Edge , Zhang Rui , "Rafael J. Wysocki" , Eduardo Valentin , "linux-kernel@vger.kernel.org" , Roberto Oppedisano , Salvatore Sisinni , auxsvr@gmail.com Subject: Re: still in 3.9-rc6 - fan speed at 100% after suspend/resume regression Message-ID: <20130413234646.GH25821@sci.fi> Mail-Followup-To: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= , Jake Edge , Zhang Rui , "Rafael J. Wysocki" , Eduardo Valentin , "linux-kernel@vger.kernel.org" , Roberto Oppedisano , Salvatore Sisinni , auxsvr@gmail.com References: <20130413100221.70c040fa@chukar.edge2.net> <20130413214359.GG25821@sci.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20130413214359.GG25821@sci.fi> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Apr 14, 2013 at 12:44:00AM +0300, Ville Syrjälä wrote: > On Sat, Apr 13, 2013 at 10:02:21AM -0600, Jake Edge wrote: > > Hi Zhang Rui, > > > > The problem reported in https://lkml.org/lkml/2012/12/4/428 (and > > incorrectly attributed to a suspend patch by me here: > > https://lkml.org/lkml/2013/4/12/314) still exists in 3.9-rc6, at least > > for my HP/Compaq 2510p laptop. It appeared that some folks were seeing > > some improvement with earlier 3.9-rcs (?) but I just tested rc6 and saw > > substantially the same behavior. This all works fine in <= 3.6.11. > > > > A brief recap: after resuming, the fan on the laptop spins up to full > > speed and stays there. "temp6" in "acpitz-virtual-0" (as shown by > > "sensors") is 100°C and stays there, which is presumably what is making > > the fan stay on. > > My HP Compaq NC6000 exhibits slightly different behaviour. For me the > reported temp is always accurate but the trip points get out of sync > with the actual temperature. > > With 3.7 I saw two different kinds of problems coming out of resume. > In one case the fan stays on until the temp rises high enough to get the > trip points back into sync. In the other case the fan goes off, and stays > off even when the temperature rises above the highest active trip point, > but it does appear to get back into sync when the temp starts to come back > down. I think the difference might stem from resuming when the laptop has > cooled down fully vs. when it's still warm. > > I also just tried 3.9-rc6, and that one appears to behave differently > to 3.7, but still wrong. There the fan goes off after resume, and comes > back on as the temperature rises, but it never slows back down after > that. > > I'll try to collect some more detailed dumps of all three cases. I filed a new bug and attached all my logs: https://bugzilla.kernel.org/show_bug.cgi?id=56591 -- Ville Syrjälä syrjala@sci.fi http://www.sci.fi/~syrjala/