From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Renninger Subject: Re: ASUS M6800N: processor has only C1 Date: Thu, 04 Mar 2004 13:22:38 +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <40471F8E.5080308@renninger.de> References: <404459FD.1000406@pca.it> <40471A4F.2090909@renninger.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <40471A4F.2090909-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: ML ACPI-devel List-Id: linux-acpi@vger.kernel.org Thomas Renninger wrote: > Luca Capello wrote: > >> >> gismo:/proc/acpi/processor/CPU1# cat power >> active state: C47514253 >> default state: C26214683 >> bus master activity: 00010000 >> states: >> C1: promotion[--] demotion[C23360] latency[000] >> usage[134972534] >> C2: >> C3: >> >> gismo:/proc/acpi/processor/CPU1# cat throttling >> Could not determine current throttling state. >> ===== >> >> I already hacked my DSDT (attached in .dsl format), but the last >> tests I made on >> 2.6.3 + ACPI 20040220 and 'ACPI DSDT in initrd' gave the same error >> (attached >> 'dmesg' output). >> >> Possible solutions? >> > I had the same problem. > 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? Thomas ------------------------------------------------------- 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