From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: Re: CoreDuo Bus-Master-Activity on Core1 ffffffff when idle, no C3 Date: Fri, 9 Feb 2007 01:54:02 -0500 Message-ID: <200702090154.02351.lenb@kernel.org> References: <1170989226.4546.17.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:53111 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946160AbXBIGzV (ORCPT ); Fri, 9 Feb 2007 01:55:21 -0500 In-Reply-To: <1170989226.4546.17.camel@localhost> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Sascha Heid Cc: linux-acpi@vger.kernel.org On Thursday 08 February 2007 21:47, Sascha Heid wrote: > Hi List! > > > i recently got a Lenovo X60T, installed Gentoo Linux, and since then i > am trying to figure out why i miss 2h of battery-life compared to > Windows-Users. After a while i noticed that the Bus-Master-Activity on > CPU1 is ffffffff when its idle and only drops if i give it some work to > do (like a kernel compile with make -j3) > When i put some load on both cores the Bus Master Activity of CPU1 is > normalizing itself and varies according to the load. > When i leave the Laptop idle for a while it gets actually hotter (60C) > then when i use it (44C). > The CPU is not able to stay in C3, it tries but comes back to C2 within > the second, i assume that is because of the high Bus Master Activity of > CPU1? > > I have already looked for help about this on various forums and mailing > lists and i talked to other people with CoreDuo's and they do not have > this issue with the Bus Master Activity. > > I tried alot of different kernels (2.6.19 and 2.6.20) and setups or used > preconfigured Kernels or even Live-Distros. > I also booted a *very* minimal Gentoo-Linux setup, no WLAN, no USB, no X > etc., and played with the BIOS-Settings (disabling as much as possible), > and now i am at a point where i really dont know what to do anymore and > i fear that im not getting any answers anywhere. > > If anyone has any advice, information or would like to see some logs or > configs, i would be very gratefull. > > Greetings from Germany, > Sascha Try disconnecting usb devices until lsusb shows nothing. cheers from Boston, -Len