From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932258Ab0CJNqX (ORCPT ); Wed, 10 Mar 2010 08:46:23 -0500 Received: from mail-ew0-f216.google.com ([209.85.219.216]:45694 "EHLO mail-ew0-f216.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932218Ab0CJNqV (ORCPT ); Wed, 10 Mar 2010 08:46:21 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=XWh42qvGcFhldGfzvmk9tQ1vgsF/6td3P22cPnphTJXJ+f5GqWaLAUPRXSB15qDRtb oHyQIfUJyT+DUur816Wk9dtm+fdK/k0/xH1v1dTZkQLxVQRvKqxmwiu+jSzOa0g/0Vp7 hRlg8m9QDh7gYOrtm+NVeJywg73++ES3o8l2I= MIME-Version: 1.0 In-Reply-To: <71cd59b01003100507q79878fdan98e53cb4e705d2c2@mail.gmail.com> References: <71cd59b01003100507q79878fdan98e53cb4e705d2c2@mail.gmail.com> Date: Wed, 10 Mar 2010 14:46:19 +0100 Message-ID: Subject: Re: Possible bug in eeepc-laptop.c - EeePC 900 From: Fabio Comolli To: Corentin Chary Cc: ACPI mailing list , Linux Kernel Mailing List , Len Brown Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi. On Wed, Mar 10, 2010 at 2:07 PM, Corentin Chary wrote: > On Tue, Mar 9, 2010 at 11:58 PM, Fabio Comolli wrote: >> Hi. >> I have an EeePC 900 running 2.6.34-rc1. >> >> If I boot it on AC the cpu runs at full speed, 900MHz; if I boot it on >> battery it runs only at 630Mhz. Plugging / unplugging the AC does not >> change the cpu frequency. Only a reboot can change the situation. >> >> I already tried to echo 0 or 1 to the >> /sys/devices/platform/eeepc/cpufv file; no effects, even if the file >> changes its value. >> >> This is not a regression from 2.6.33: this behavior is also present in >> that version. >> >> Does this ring any bells? This is really annoying, especially when >> trying to watch a movie on battery. Also 3D apps show a 30% >> performance drop, as expected. > > Can you change the frequency with cpufreq ? No, I can't. Which cpufreq driver am I supposed to use? With only cpufreq compiled in, the directory /sys/drivers/system/cpu/cpu0/cpufreq is empty. > Did you try all cpufv values (see cpufv_available file) ? Yes, it only shows 0 and 1. I tried both, without success. > Is you bios up-to-date ? Yes it is, it's 1006. > > -- > Corentin Chary > http://xf.iksaif.net > Thanks. Fabio