From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nate Lawson Subject: Re: ASUS M6800N: processor has only C1 Date: Wed, 10 Mar 2004 20:17:24 -0800 (PST) Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040310201438.Y61960@root.org> References: <404459FD.1000406@pca.it> <40471A4F.2090909@renninger.de> <40471F8E.5080308@renninger.de> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Return-path: In-Reply-To: <40471F8E.5080308-smMupaH/RwJM7kwft8N7nw@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Thomas Renninger Cc: ML ACPI-devel List-Id: linux-acpi@vger.kernel.org On Thu, 4 Mar 2004, Thomas Renninger wrote: > Thomas Renninger wrote: > > Your machine supports the C4 state. > > Change the P_BLK in your DSDT to 0x06 > > > > e.g.: > > Processor (\_PR.CPU0, 0x01, 0x00001010, 0x07) > > to: > > Processor (\_PR.CPU0, 0x01, 0x00001010, 0x06) > > > > or use the patch from Pavel, posted on the 28.02.2004, 17:10. > > > > Unfortunately this won't enable the C4 state if you have one. > > What do mainters say about supporting Cn processor states in the future? > > I am pretty sure this message will come up more often in future. > Could it be that new mobile Intel processors support the C4 state -> > therefore P_BLK = 0x07? > > Pavel's patch is a workaround, setting P_BLK back to 6, but isn't it > worth a critical bug for supporting Cn states, > as only supporting C0-C3 states offends the specification? For FreeBSD, I took the approach that throttling requires P_BLK_LEN >= 4, C2 requires >= 5, and C3 requires >= 6. Systems with higher values will get C1-C3 but we will not support C4 on such systems. There are already plenty of valid systems with _CST out in the real world (i.e. IBM Centrino laptops) and so for someone to break the standard now is unacceptable. Users will get C1-C3 on broken systems, which is good enough. -Nate ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click