Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751457Ab0BKEzX (ORCPT ); Wed, 10 Feb 2010 23:55:23 -0500 Received: from casper.infradead.org ([85.118.1.10]:47201 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751015Ab0BKEzV (ORCPT ); Wed, 10 Feb 2010 23:55:21 -0500 Date: Wed, 10 Feb 2010 20:56:37 -0800 From: Arjan van de Ven To: Dimitrios Apostolou Cc: Andrew Morton , Alex Chiang , Len Brown , Bjorn Helgaas , Yinghai Lu , linux-kernel@vger.kernel.org Subject: Re: High cpu temperature with 2.6.32, bisection shows commit 69d258 (fwd) Message-ID: <20100210205637.63131c24@infradead.org> In-Reply-To: References: <20100108171513.GB22713@ldl.fc.hp.com> <20100109134352.3dedd4ea@infradead.org> <20100109160836.26a344a9@infradead.org> <20100109164240.43b21247@infradead.org> <20100112160734.89ee6b11.akpm@linux-foundation.org> <20100112213205.7d74808a@infradead.org> Organization: Intel X-Mailer: Claws Mail 3.7.3 (GTK+ 2.16.6; i586-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1260 Lines: 35 On Wed, 10 Feb 2010 22:51:38 +0200 (EET) Dimitrios Apostolou wrote: > > > As I understand, in his case the C3 state is unstable and exits > immediately. I have asked him to post the dmidecode output so you can > put him on the exception list too. However I now believe that more > and more users will be facing the same problem, it's not something > you find easily, especially on desktop machines! What do you think? if C3 does not work, this needs to be fixed in the code that implements C3, not in the code that selects C3. Modern systems should have working C3; if one does not it needs to be investigated as to why it's not working. One cause could be a PME that we're not handling (I've seen that a few times in our lab), lspci -vvv will show that. But regardless, it's not the task of the code that selects a C state to deal with.... -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/