From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cacy Rodney Subject: acpi_apic_instance=2 Date: Mon, 11 Feb 2008 23:06:17 +0100 Message-ID: <47B0C6D9.2010508@tlen.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mx10.go2.pl ([193.17.41.74]:60502 "EHLO poczta.o2.pl" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753416AbYBKWGU (ORCPT ); Mon, 11 Feb 2008 17:06:20 -0500 Received: from poczta.o2.pl (mx10.go2.pl [127.0.0.1]) by poczta.o2.pl (Postfix) with ESMTP id B197458014 for ; Mon, 11 Feb 2008 23:06:18 +0100 (CET) Received: from [10.1.1.146] (i01m-62-35-173-211.d4.club-internet.fr [62.35.173.211]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by poczta.o2.pl (Postfix) with ESMTP for ; Mon, 11 Feb 2008 23:06:17 +0100 (CET) Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Hi, I ran the kernel with the acpi_apic_instance=2 option and I found that the fan works different. The power supplier was attached to my laptop at the time which means that the fan should rotate continuously like usually, but it starts to work only when the cooling is needed. The computer with default instance works in that way only when the power comes from battery. So it seems that the default acpi table depends on the power state. The benefit of using acpi_apic_instance=2 is the quiet work of the plugged machine. I did not try to change the acpi instance without power supplier. cacy I have sony vaio SZ series