From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752802Ab3CJPrJ (ORCPT ); Sun, 10 Mar 2013 11:47:09 -0400 Received: from mail2.sha-bang.de ([78.47.120.114]:45098 "EHLO mail.sha-bang.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751264Ab3CJPrH convert rfc822-to-8bit (ORCPT ); Sun, 10 Mar 2013 11:47:07 -0400 From: Sascha Wilde To: linux-kernel@vger.kernel.org Cc: Salvatore Sisinni , Roberto Oppedisano Subject: Re: regression in linux 3.7 - fan speed at 100% after suspend/resume at 100% In-Reply-To: (Sascha Wilde's message of "Sat, 09 Mar 2013 18:50:54 +0100") References: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) Date: Sun, 10 Mar 2013 16:47:00 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sascha Wilde wrote: [...] > [2] FWIW², I'm under the stron impression that the whole fan control > changed in the latest vanilla kernels on my 6910p even before doing > a suspend/resume -- it seems to be more "binary" if you will, in > that the fan is not running at all for a while and then at a 100% > to return back to 0% after doing some serious cooling. With 3.6.11 > and older it is more "analogue", with slow fan when only a bit > cooling is needed. No idea if this is related to the issue at > hand. For that part of the problem I just discovered something that might be a hint on the cause, there is no governor set for the thermal zones: /sys/devices/virtual/thermal/thermal_zone0/policy : (null) /sys/devices/virtual/thermal/thermal_zone1/policy : (null) /sys/devices/virtual/thermal/thermal_zone2/policy : (null) /sys/devices/virtual/thermal/thermal_zone3/policy : (null) /sys/devices/virtual/thermal/thermal_zone4/policy : (null) to my understanding this policies should default default to the CONFIG_THERMAL_DEFAULT_GOV_* configured in the kernel. But it is always (null) for me. And something like # echo fair_share >/sys/devices/virtual/thermal/thermal_zone0/policy does not work either. Or is this expected behavior? cheers sascha -- Sascha Wilde : "There are 10 types of people in the world. : Those who understand binary and those who don't."