Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751521Ab0HURF7 (ORCPT ); Sat, 21 Aug 2010 13:05:59 -0400 Received: from ksp.mff.cuni.cz ([195.113.26.206]:54993 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751089Ab0HURF5 (ORCPT ); Sat, 21 Aug 2010 13:05:57 -0400 Date: Sat, 21 Aug 2010 19:05:51 +0200 From: Pavel Machek To: Jiri Slaby Cc: linux-acpi@vger.kernel.org, Linux-pm mailing list , LKML Subject: Re: Fan runs full speed after S3 sometimes (regression) Message-ID: <20100821170551.GA27159@elf.ucw.cz> References: <4C613619.30309@gmail.com> <4C619CF0.30609@gmail.com> <20100820063107.GB1607@ucw.cz> <4C6E233A.5000209@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C6E233A.5000209@gmail.com> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1602 Lines: 39 Hi! > >>> till I was running on 2.6.34-rc5-mm1 (mmotm) and earlier everything was > >>> fine. Now, I'm running 2.6.35-rc6-mm1 (.35-rc5-mm1 was the same) and > >>> sometimes when the computer (desktop) returns from S3, the CPU fan is > >>> running at full speed making a big noise. > >> > >> Just to add, full power cycle is needed to get rid of that. Warm reboot > >> is not enough. > > > > Seems like bios problem... Update bios? > > I don't think so, it had been working for more than 2 years before this > issue appeared. Well; if it survives warm reboot, then it looks like BIOS problem... > >>> I don't know how to debug that. Bisection is out of question -- it > >>> happens once in 10 or 20 cases. There are no fan entries in /sys. > > > > Well, doing 20 suspends in a row from a script should not be too bad. > > 20 is just a guess. I haven't seen it for pretty few days until the day > before yesterday. And it looks like CPU1 is brought up a half way. When > the fan was at full speed I tried: > echo 0 > /sys/devices/system/cpu/cpu1/online > and whole system freezed. Otherwise this commands succeeds. Ok, so this looks like the kernel problem, on the other hand. Two different problems? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/