From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johnathan Hicks Subject: Re: An embedded-Linux power-management framework Date: Sat, 03 Aug 2002 10:50:12 -0400 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <3D4BEDA4.4030908@folkwolf.net> References: <20020802172802.GA32612@avalon.paulsen.org> <1028315477.18635.113.camel@irongate.swansea.linux.org.uk> <1028312475.23390.63.camel@granite.austin.ibm.com> <1028330951.31733.5.camel@irongate.swansea.linux.org.uk> <3D4B284F.20402@folkwolf.net> <1028382470.31718.43.camel@irongate.swansea.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: acpi-devel List-Id: linux-acpi@vger.kernel.org Alan Cox wrote: > It may make sense on a box with ACPI, but most boxes that are heavily > STPCLK managed are older. The Athlon one seems to be less interesting > than the others (btw - seems you can mix stpclk with the other features > you just have to turn stpclk back off before idling) Ah yes, I had forgotten about the older hardware, but I thought all they had was HLT. About the Athlon case, STPCLK is used for all the power management that I can think of except HLT. Feel free to correct me here if I'm wrong. > On a K5/K6/486/.. STPCLK is basically your entire power management > barring what lurks on the PCI devices - which can save a suprising > amount of power too. I've been playing (not very successfully at the > moment) at dropping my video card into D3 when screenblanking What kind of delay would that cause when restoring the state of the card? I would hope not that great of a delay as this kind of action is one that should be expected. --John ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf