Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 13 Dec 2001 13:31:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 13 Dec 2001 13:31:30 -0500 Received: from goliath.siemens.de ([194.138.37.131]:46279 "EHLO goliath.siemens.de") by vger.kernel.org with ESMTP id convert rfc822-to-8bit; Thu, 13 Dec 2001 13:31:23 -0500 From: Borsenkow Andrej To: Andreas Steinmetz Cc: linux-kernel@vger.kernel.org Subject: RE: APM idle problems - how to check if BIOS halts CPU? In-Reply-To: In-Reply-To: Content-Type: text/plain; charset=KOI8-R Content-Transfer-Encoding: 8BIT Message-Id: <1008267923.2263.3.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution/1.0 (Preview Release) Date: 13 Dec 2001 21:31:09 +0300 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Oh, my! I am ashamed. I totally missed the fact that default idle task alredy halts CPU. I must be getting old :( On ???, 2001-12-13 at 14:39, Andreas Steinmetz wrote: > I posted an apm patch and asked Marcelo to apply it. What you do see is > kapm-idled and the idle task both racing for idle time. There's even more > problems (search lkml for subject kapm-idled and have a look at the reply from > Alan Cox on Dec 5 which does contain my original mail and the patch). With the > patch e.g. the fan control of my laptop works properly which it never did > before. Unfortunately, this patch does not works as I'd expected. This patch does hide systime, but it does not cool CPU. With this patch system runs 4C hotter than it run when I replaced apm_do_idle() with apm_cpu_idle() in original apm.c I'll try to get a closer look at weekend; any hints how to debug it are welcome. If you really do have a broken bios there's no other way than to > contact your system's vendor. > Well, my vendor is ASUS and it is notorious for never answering bug reports from mere mortals. I also do not know how important Linux market is for them and Windows runs fine with ACPI (and Linux with ACPI does not have this problem as well. But I run Mandrake and they currently do not want to enable ACPI for different reasons). But I'll try anyway. Thank you -andrej - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/