From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752100Ab0CWXol (ORCPT ); Tue, 23 Mar 2010 19:44:41 -0400 Received: from perec.tyrell.hu ([66.197.149.104]:43746 "EHLO perec.tyrell.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751365Ab0CWXok (ORCPT ); Tue, 23 Mar 2010 19:44:40 -0400 Message-ID: <4BA9525E.9000701@maroy.hu> Date: Tue, 23 Mar 2010 17:44:30 -0600 From: =?UTF-8?B?w4Frb3MgTWFyw7N5?= Organization: Tyrell Corporation User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Kernel development list Subject: how to debug a kernel that does not power off? X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 2.6.32.9. 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