From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Hancock Subject: Re: [Help] I can't get Intel Speedstep working Date: Fri, 10 Apr 2009 18:45:07 -0600 Message-ID: <49DFE813.3020705@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-gx0-f160.google.com ([209.85.217.160]:53944 "EHLO mail-gx0-f160.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752705AbZDKArF (ORCPT ); Fri, 10 Apr 2009 20:47:05 -0400 Received: by gxk4 with SMTP id 4so2975654gxk.13 for ; Fri, 10 Apr 2009 17:47:03 -0700 (PDT) In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Robert Szalai Cc: linux-acpi@vger.kernel.org Robert Szalai wrote: > Hello everybody, > > I have a Shuttle K48 Barebone PC (Intel 945GC + ICH7 chipset) and a > Core 2 Duo E7300 CPU. I'm using Ubuntu 8.04 with 2.6.24-23-generic > kernel on my box. Everything works fine except Speedstep. When I try > to load acpi_cpufreq module, I get the following error: > > $ sudo modprobe acpi_cpufreq > FATAL: Error inserting acpi_cpufreq > (/lib/modules/2.6.24-23-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): > No such device > > I've tried everything (other kernel versions, various patches) but the > result is the same. > I don't know if it is related to EIST or not but I've found these two > Exceptions in my dmesg: > > [ 20.675593] ACPI Exception (processor_core-0822): AE_NOT_FOUND, > Processor Device is not present [20070126] > [ 20.675599] ACPI Exception (processor_core-0822): AE_NOT_FOUND, > Processor Device is not present [20070126] > > After some research I've found that maybe a broken DSDT table is the > couse of my problem. I'm not an ACPI expert and I dont't know how to > locate and fix the problem in my DSDT. I've uploaded my dsdt.dsl to > > http://www.easy-share.com/1903982677/dsdt.dsl > > Any suggestions? I'd really like to use Speedstep on my Box. > You are my last hope Guys. Your system doesn't seem to have anything interesting regarding CPU frequency scaling in the DSDT, but it's often in the FADT instead. Posting a full acpidump might be more useful.. Also make sure that any BIOS settings to allow CPU frequency scaling are enabled.