From mboxrd@z Thu Jan 1 00:00:00 1970 From: pumpkin Subject: Re: C2, C3 and bus master activity Date: Tue, 19 Jul 2005 23:59:55 +0200 Message-ID: <200507192359.56553.pumpkin@gmx.de> References: <200507192050.28343.pumpkin@gmx.de> <200507192118.37528.bob@diamond.demon.co.uk> Reply-To: pumpkin-Mmb7MZpHnFY@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200507192118.37528.bob-l+PWtdWbHAsG2Il/BtU0GPXRex20P6io@public.gmane.org> Content-Disposition: inline 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: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org 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 ? 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 > > On Tuesday 19 July 2005 19:50, pumpkin wrote: > > Hello > > > > My CPU does not enter C3 if i run the stock configuration. Way too much > > bus master activity. I want to find out what is causing it. Any hints how > > to do that ? > > > > I found one possible cause for some of the activity. Without X i have a > > 50:50 mix between C2 and C3. Using the vesa-driver the mix stays at > > 50:50. Using the radeon-driver (dri disabled) the CPU stops using C3. > > > > the facts in case somebody already has a idea: > > - ibm R51 > > - PentiumM 725 (1.6GHz) > > - Intel 855PM chipset > > - radeon 7500 mobil > > - xorg 6.8.2 > > - kernel 2.6.11-1-686 (debian stock-kernel) > > > > thanks. > > > > > > ------------------------------------------------------- > > 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 > > _______________________________________________ > > Acpi-devel mailing list > > Acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org > > https://lists.sourceforge.net/lists/listinfo/acpi-devel ------------------------------------------------------- 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