From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxim Levitsky Subject: Re: Linux 2.6.25 (coretemp reads high temperatures) Date: Wed, 23 Apr 2008 11:43:10 +0300 Message-ID: <200804231143.10875.maximlevitsky@gmail.com> References: <200804182151.49021.lenb@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from fg-out-1718.google.com ([72.14.220.157]:21132 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752408AbYDWInQ convert rfc822-to-8bit (ORCPT ); Wed, 23 Apr 2008 04:43:16 -0400 Received: by fg-out-1718.google.com with SMTP id l27so2537314fgb.17 for ; Wed, 23 Apr 2008 01:43:15 -0700 (PDT) In-Reply-To: <200804182151.49021.lenb@kernel.org> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown Cc: Matthew , linux-acpi@vger.kernel.org, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org On Saturday, 19 April 2008 04:51:48 Len Brown wrote: > On Friday 18 April 2008, Matthew wrote: > > Hi everyone, hi Linus, > >=20 > > congratulations on this new great kernel-release :) > >=20 > > I've another "regression" to report for 2.6.25: > >=20 > > it's concerning much higher temperatures being read out by the > > "coretemp" kernel-module in comparison to 2.6.24* series > >=20 > > e.g. where temperatures were around 40-47=B0C they are now constant= ly > > jumping around 55-70=B0C (even in idle !) I just updated from 2.6.24 to 2.6.25 (I usually follow whole development cycle, but I was very busy, so I sk= ipped 2.6.25 cycle) I confirm this. I *know* that temperatures reported now are wrong. The reason is that bios did report same temperatures as coretemp in 2.6= =2E24, moreover some time ago I have run a cpu tool (don't remember its name) = on windows which similar to coretemp reads from each core directly, sensor data ,=20 and I noticed that temperature that bios reports is exactly the average= =20 temperature of both cores (I had to run this on windows - intel haven't released=20 drivers for their QST for temperature monitoring from bios - very sad) And the driver did say in kernel log that TJMAX is 85C Lets at least make a kernel option to override tjmax? Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html