From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: [PATCH] X86: Solve Dell Latitudes do not reboot on x86_64 more generally Date: Mon, 7 Nov 2011 13:59:24 +0000 Message-ID: <20111107135923.GA17060@srcf.ucam.org> References: <4EB39139.3090709@suse.de> <1320453843-938-1-git-send-email-trenn@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([93.93.128.6]:41577 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754691Ab1KGN71 (ORCPT ); Mon, 7 Nov 2011 08:59:27 -0500 Content-Disposition: inline In-Reply-To: <1320453843-938-1-git-send-email-trenn@suse.de> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Thomas Renninger Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-acpi@vger.kernel.org, stable@kernel.org On Sat, Nov 05, 2011 at 01:44:03AM +0100, Thomas Renninger wrote: > There are quite some reports that those do not reboot: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/833705 > ->E6520, E6220 > http://www.linux-club.de/viewtopic.php?f=29&t=114459&start=20 > ->E5520 > and some more already are blacklisted It's a bug in the SMM code on these machines, and it goes away if you disable VT-D. Let's try to actually fix it rather than adding to the blacklist, otherwise we'll just end up with another batch of broken Dells later on. -- Matthew Garrett | mjg59@srcf.ucam.org