From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Guntsche Subject: Re: ACPI and framebuffer related problems with Linux 2.6.1-rc1 Date: Fri, 2 Jan 2004 11:29:14 +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040102112914.17654746.mike@it-loops.com> References: <20040101220615.GA1804@minerva.local.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20040101220615.GA1804-pLH66uKTs7QSl9drg5isYP8+0UxHXcjY@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On Thu, 1 Jan 2004 23:06:15 +0100 Martin Loschwitz wrote: > However, there is a problem with ACPI: > /proc/acpi/processor/CPU0/performance, which was there in previous > versions of the kernel and allowed me to slow the CPU down in order to > save power, disappeared in Linux 2.6.1-rc1. It's simply not there > anymore. Was it replaced? If so, what is the right way to do it by > now? After reading this E-Mail I tested it on my notebook (TarvelMate800) and noticed that even with kernel 2.6.0 /proc/acpi/processor/CPU0/limit and /proc/acpi/processor/CPU0/performance disappeared. Kernel 2.4.23: ($:/)-> cat /proc/acpi/processor/CPU0/info processor id: 0 acpi id: 0 bus mastering control: yes power management: yes throttling control: no performance management: yes limit interface: yes Kernel 2.6.0: ($:/)-> cat /proc/acpi/processor/CPU0/info processor id: 0 acpi id: 0 bus mastering control: yes power management: yes throttling control: no performance management: no limit interface: no I don't use the performance option, since I throttle my notebook with cpufreq, but it still looks like a regression. /Michael ------------------------------------------------------- This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id=1278&alloc_id=3371&op=click