From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Drake Subject: "Unable to start the ACPI Interpreter" in 2.6.16 Date: Fri, 14 Apr 2006 14:29:57 +0100 Message-ID: <443FA3D5.4070103@gentoo.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mta09-winn.ispmail.ntl.com ([81.103.221.49]:3567 "EHLO mtaout03-winn.ispmail.ntl.com") by vger.kernel.org with ESMTP id S1751251AbWDNNRA (ORCPT ); Fri, 14 Apr 2006 09:17:00 -0400 Received: from aamtaout01-winn.ispmail.ntl.com ([81.103.221.35]) by mtaout03-winn.ispmail.ntl.com with ESMTP id <20060414131659.ORKL27969.mtaout03-winn.ispmail.ntl.com@aamtaout01-winn.ispmail.ntl.com> for ; Fri, 14 Apr 2006 14:16:59 +0100 Received: from [192.168.0.2] (really [86.14.216.162]) by aamtaout01-winn.ispmail.ntl.com with ESMTP id <20060414131659.VFOZ19763.aamtaout01-winn.ispmail.ntl.com@[192.168.0.2]> for ; Fri, 14 Apr 2006 14:16:59 +0100 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Hi, A Gentoo user reported a 2.6.16 regression at http://bugs.gentoo.org/129011 In a nutshell, ACPI worked in 2.6.15, and breaks in 2.6.16 and the /proc/acpi interface is not present. Here are the relevant looking messages from dmesg: ACPI: SCI (IRQ0) allocation failed ACPI Exception (evevent-0167): AE_NOT_ACQUIRED, Unable to install System Control Interrupt handler [20060127] ACPI: Unable to start the ACPI Interpreter evxfevnt-0134 [06] disable : ACPI mode disabled ACPI (utalloc-0862): No outstanding allocations [20060127] ACPI Exception (utmutex-0257): AE_BAD_PARAMETER, Thread 1 could not acquire Mutex [6] [20060127] ACPI Exception (utmutex-0257): AE_BAD_PARAMETER, Thread 1 could not acquire Mutex [6] [20060127] Full dmesg can be found at http://bugs.gentoo.org/attachment.cgi?id=84551&action=view This bug is already fixed in 2.6.17-rc1. Does anyone know offhand which patch fixes this? I'd like to backport the fix and also submit it for the -stable branch. Thanks, Daniel