From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751088AbVK0PL6 (ORCPT ); Sun, 27 Nov 2005 10:11:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751089AbVK0PL6 (ORCPT ); Sun, 27 Nov 2005 10:11:58 -0500 Received: from cavan.codon.org.uk ([217.147.92.49]:56752 "EHLO vavatch.codon.org.uk") by vger.kernel.org with ESMTP id S1751088AbVK0PL5 (ORCPT ); Sun, 27 Nov 2005 10:11:57 -0500 Date: Sun, 27 Nov 2005 11:56:53 +0000 From: Matthew Garrett To: Andrew Morton Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH] Reboot through the BIOS on newer HP laptops Message-ID: <20051127115653.GA7126@srcf.ucam.org> References: <20051124052107.GA28070@srcf.ucam.org> <20051126203326.07b09394.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051126203326.07b09394.akpm@osdl.org> User-Agent: Mutt/1.5.9i X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@codon.org.uk X-SA-Exim-Scanned: No (on vavatch.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Nov 26, 2005 at 08:33:26PM -0800, Andrew Morton wrote: > But your patch will do this for all HP laptops, will it not? Worrisome. > Is it not possible to identify particular models? Yes, but there seems to be an awfully large number of affected models (at least the nc4200, tc4200, nx6110, nc6120, nc6220, nc6230, nc8220, nc8230 and nw8240) and HP and myself couldn't figure out /why/ they won't reboot in the normal way, so there's a fairly good chance that the next generation of them will have the same problem. It's actually a bit odd. If I write some userspace code to prod the keyboard controller in the same way as the kernel reboot code does, the system reboots. If the kernel does it, it freezes at the point where it pokes the keyboard controller. -- Matthew Garrett | mjg59@srcf.ucam.org