From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pedro Venda Subject: Re: Centrino speedstep Date: Thu, 30 Dec 2004 16:36:24 +0000 Message-ID: <41D42E88.5080800@mega.ist.utl.pt> References: <20041228212653.GA8436@dominikbrodowski.de> <20041229181834.GA19199@poupinou.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20041229181834.GA19199-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org> Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Bruno Ducrot , acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Bruno Ducrot wrote: > On Tue, Dec 28, 2004 at 10:26:53PM +0100, Dominik Brodowski wrote: >=20 >>On Tue, Dec 28, 2004 at 09:32:00PM +0100, Johan Vromans wrote: >> >>>Hi, >>> >>>On my Acer Travelmate 4000WLMi, with various 2.6.9 and 2.6.10 kernels >>>and patch sets, I keep getting the following message: >>> >>> speedstep-centrino: invalid ACPI data >>> speedstep-centrino: no table support for CPU model "Intel(R) Pentium= (R) M processor 1.50GHz":=20 >>> >>>(Some kernels report "Invalid control/status registers" instead of >>>"invalid ACPI data"). >>> >>>My latest attempt was the stock 2.6.10 kernel, with ACPI patch set >>>acpi-20041210-2.6.10-rc3.diff, and a fixed DSDT. Still no success. >>> >>>Any help is appreciated. >> >>It looks like your notebook's BIOS does not report sufficient data to t= he >>speedstep-centrino cpufreq driver. Does the acpi-cpufreq driver work >>instead? >> >=20 >=20 > After looking the DSDT, this laptop do not support the _PDC switch, so > the cpufreq-centrino driver will not work. But it should work with the > acpi io driver though. >=20 > This also mean there is no way to get the ondemand governor (or any DV= S > requiring low latency driver) to work with this one (unless hardcoding > a table in the cpufreq-centrino). > > There is no _CST also, this means there is no C4 support :( > sorry for interrupting thread flow, but I didn't understand this one... I'm running on a tmate 4001 WLMi with speedstep-centrino driver and ondem= and=20 governor. I don't see any problems... the clock scales correctly and fast... Is it=20 possible to have a different DSDT from dominik's? regards, pedro venda. --=20 Pedro Jo=E3o Lopes Venda email: pjlv-aHmAgkVUFT6Joy8PIJZ9VA@public.gmane.org http://arrakis.dhis.org ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt