From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: Re: Help with fan on fujitsu siemens Date: Fri, 16 Feb 2007 16:58:37 -0500 Message-ID: <200702161658.37249.lenb@kernel.org> References: <200702161202.43455.lenb@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:60553 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932599AbXBQCJX (ORCPT ); Fri, 16 Feb 2007 21:09:23 -0500 In-Reply-To: Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Andras Lorincz Cc: linux-acpi@vger.kernel.org On Friday 16 February 2007 13:25, you wrote: > On 2/16/07, Len Brown wrote: > > On Friday 16 February 2007 02:46, Andras Lorincz wrote: > > > > > and the output of cat /proc/acpi/thermal_zone/*/* is: > > > > > > cooling mode: active > > > polling frequency: 30 seconds > > > state: ok > > > temperature: 49 C > > > critical (S5): 105 C > > > passive: 79 C: tc1=3 tc2=1 tsp=80 > > > devices=0xf7e9c720 > > > active[0]: 65 C: devices=0xc17e4d9c > > > active[1]: 55 C: devices=0xc17e4d38 > > > > > > Some remarks: > > > > > > - the polling frequency is not set by default so I > > > run a script on startup which sets the polling > > > frequency to 30 secs > > > > if you don't set polling frequency it is 0? > > Does anything not work in that case? > > > > That is the ideal case -- as polling frequency 0 > > means that the system is event-driven. > > > > If you need to enable polling b/c something isn't working, > > 3 seconds may be more prudent than 30 seconds. > > > > > - the state reported by > > > /proc/acpi/thermal_zone/THRM/state changes correctly > > > according to changing temperatures but it is not in > > > accordance with the real state of the cooler. > > > > Do you have /proc/acpi/fan/*/* files? > > What do they say? > > > > -Len > > > > Now I'm playing around with 2.6.20. If I don't set the polling > frequency at boot time then cat > /proc/acpi/thermal_zone/polling_frequency gives me: > > > > I also tried setting the polling frequency to 0 but doesn't help. ls > /proc/acpi/fan gives me: right, polling frequency of 0 disables polling. when polling is disabled, the thermal system is event driven. why do you want to enable polling -- what is not working when it is disabled? > FAN0 FAN1 > > and ls /proc/acpi/fan/FAN0 and ls /proc/acpi/fan/FAN1 give me: > > state s/ls/cat/ -Len