From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?w4Frb3MgTWFyw7N5?= Subject: how to debug a kernel that does not power off? Date: Wed, 24 Mar 2010 22:32:21 -0600 Message-ID: <4BAAE755.9090509@maroy.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from perec.tyrell.hu ([66.197.149.104]:41115 "EHLO perec.tyrell.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752204Ab0CYFL5 (ORCPT ); Thu, 25 Mar 2010 01:11:57 -0400 Received: from localhost (localhost [127.0.0.1]) by perec.tyrell.hu (Postfix) with ESMTP id 7ACAA300D5 for ; Thu, 25 Mar 2010 00:32:34 -0400 (EDT) Received: from perec.tyrell.hu ([127.0.0.1]) by localhost (perec.tyrell.hu [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 8nrvcg03g6cG for ; Thu, 25 Mar 2010 00:32:30 -0400 (EDT) Received: from [10.128.226.215] (unknown [189.140.25.145]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: akos@maroy.hu) by perec.tyrell.hu (Postfix) with ESMTPSA id 872DA300D4 for ; Thu, 25 Mar 2010 00:32:30 -0400 (EDT) Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Hi, This might be a lame question, but: how would I debug a kernel that simply does not power off a machine? When powering off, on the console I get to the message: [...] Poweroff. but then, the machine actually does not power off. This is an HP Envy 15 laptop using an intel i7 CPU, and kernel 2.6.32.8..10. I tried to read up on all sorts of documentation, but could not get more debug info out of the kernel :( any pointers would be welcome.. Akos