From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johan Vromans Subject: Re: C2, C3 and bus master activity Date: Wed, 20 Jul 2005 21:05:16 +0200 Message-ID: References: <200507192050.28343.pumpkin@gmx.de> <200507192118.37528.bob@diamond.demon.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <200507192118.37528.bob-l+PWtdWbHAsG2Il/BtU0GPXRex20P6io@public.gmane.org> (Bob Lees's message of "Tue, 19 Jul 2005 21:18:37 +0100") 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 Bob Lees writes: > 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. On my laptop (Acer Travelmate 4001WLMi[1]) it's just the uhci-hcd driver. Unloading it enables C3 again. -- Johan [1] http://www.squirrel.nl/people/jvromans/articles/TM4001WLMi/ ------------------------------------------------------- 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