From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Anthony L. Awtrey" Subject: Re: acpi_cpufreq stepping issue on Pentium M 1.2GHz Date: Mon, 19 May 2008 07:29:49 -0400 Message-ID: <483164AD.9070905@awtrey.com> References: <482DCF52.6030307@awtrey.com> <20080519000810.GA11313@codemonkey.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080519000810.GA11313@codemonkey.org.uk> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cpufreq-bounces@lists.linux.org.uk Errors-To: cpufreq-bounces+glkc-cpufreq=m.gmane.org+glkc-cpufreq=m.gmane.org@lists.linux.org.uk To: Dave Jones Cc: cpufreq@lists.linux.org.uk On 05/18/2008 08:08 PM, Dave Jones wrote: > On Fri, May 16, 2008 at 02:15:46PM -0400, Anthony L. Awtrey wrote: > > Hi, > > > > I've been trying to get the acpi_cpufreq working on my Panasonic > > Toughbook CF-18 (Intel Pentium M 1.2GHz). It works just fine on my CF-19 > > (Intel Core Duo U2400) just fine. > > > > When I am on wall power, the system runs at full speed (1.2GHz) and when > > I pull it off wall power it steps to 600MHz and nothing I have tried > > changes that. I need to be able to run full speed while on battery. > > Some BIOSes take away P states when theres a transition in power source. > Nothing much we can do about it. Check if your BIOS has an option to > let this be 'OS controlled', as opposed to 'automatic' or similar wording. Even though the CPU stepped properly using the speedstep-centrino module in older kernels like the 2.6.18? T