From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: Strange entries in /proc/acpi/thermal_zone for Thinkpad X60 Date: Fri, 13 Oct 2006 14:44:57 +0000 Message-ID: <20061013144457.GA5512@ucw.cz> References: <452EBF7C.3000409@goop.org> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <452EBF7C.3000409@goop.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Jeremy Fitzhardinge Cc: "Brown, Len" , "Pallipadi, Venkatesh" , acpi-devel@kernel.org, cpufreq@lists.linux.org.uk, Linux Kernel Mailing List Hi! > I have a Thinkpad X60 with an Intel Core Duo T2400. In > /proc/acpi/thermal_zone, I'm getting two subdirectories, > each with their own set of files: Looks okay to me. One thermal zone is cpu temperature, and second is temperature of something else. > The interesting thing is that the two sets of files are > not consistent - sometimes they don't even show the same > temperature. You have two (actually you have more, see tp_smapi) physical thermometers. > The reason I'm interested in this is that I think it's > behind some of my cpufreq problems. Sometimes the > kernel decides that I just can't raise the max frequency > above 1GHz, because its been thermally limited (I've put > printks in to confirm that its the ACPI thermal limit on > the policy notifier chain which is limiting the max > speed). It seems to me that having a thermal zone for > each core is a BIOS bug, since they're really the same > chip, but the THM1 entries should be ignored. I don't THM1 does not seem to be cpu temperature. Pavel -- Thanks for all the (sleeping) penguins.