From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ari Pollak Subject: Re: Status of ACPI on IBM T40p Date: Fri, 06 Feb 2004 19:35:50 -0500 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: References: <200402041507.33902@zodiac.zodiac.dnsalias.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200402041507.33902-qgpBcDF1kIxsXm07kNcISIFwBlHcXKVlHZ5vskTnxNA@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 Interesting, I have the exact opposite problem. According to the power states: active state: C2 default state: C1 bus master activity: 02000008 states: C1: promotion[C2] demotion[--] latency[000] usage[00000010] *C2: promotion[C3] demotion[C1] latency[001] usage[01048795] C3: promotion[--] demotion[C2] latency[085] usage[01977750] As you can see, my Thinkpad T41 rarely goes higher than C2, even when a program is using 100% or compiling or something along those lines. > The CPU has C0-C3. C0 is full speed, the rest is slower. According to the ACPI > documentation the CPU should switch automagically to the slower modes after > some time of inactivaty. However it cannot controll busmaster PCI transfers > in C3. Now some driver doesn't gets busmaster right, and due to this, the cpu > never go's to C3 [Hope I got this right, I am no acpi master..](my went to C3 > after some fiddeling with suspend (see later) and the PCI-Bus crashed, hence > I know. If my CPU uses C3, laptop_mode and backlight mostly dimmed, I > reached 5h+ :) ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn