From mboxrd@z Thu Jan 1 00:00:00 1970 From: Janosch Machowinski Subject: Re: C2, C3 and bus master activity Date: Wed, 20 Jul 2005 01:00:03 +0200 Message-ID: <42DD85F3.9050300@tzi.de> References: <200507192050.28343.pumpkin@gmx.de> <200507192118.37528.bob@diamond.demon.co.uk> <200507192359.56553.pumpkin@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200507192359.56553.pumpkin-Mmb7MZpHnFY@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: pumpkin-Mmb7MZpHnFY@public.gmane.org Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org pumpkin wrote: > Hello > > I tested this by removing kernel/driver/usb/* and rebuilding initrd (just to > be sure). It did not change anything for console (still 50:50 between C2 and > C3) and made Xorg crash pretty hard. > > Do you think removing all the other external buses (Firewire, ethernet, > WLAN ,..) would change something ? > Sometimes an active WLAN driver causes bus master activity... You also should not use an USB Mouse... And by the way, what's wrong with 50:50 C2 C3 ? This seems pretty normal to me. > Could cpufreqd be part of the problem ? > > Thanks, > > On Tuesday 19 July 2005 22:18, Bob Lees wrote: > >>Hi >> >>In a word USB. I don't fully understand why, but if I disable USB then >>both my laptops will go into C3 or C4, with USB enabled stays in C2. >> >>Laptops are Compaq EVO 800c and IBM T42p both running SUSE 9.3 with a stock >>SuSE kernel 2.6.11-suse modified >> >>Bob >> ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click