From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Renninger Subject: Re: [PATCH] X86: Solve Dell Latitudes do not reboot on x86_64 more generally Date: Mon, 7 Nov 2011 15:25:13 +0100 Message-ID: <201111071525.14255.trenn@suse.de> References: <4EB39139.3090709@suse.de> <1320453843-938-1-git-send-email-trenn@suse.de> <20111107135923.GA17060@srcf.ucam.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: Received: from cantor2.suse.de ([195.135.220.15]:46315 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750819Ab1KGOZR convert rfc822-to-8bit (ORCPT ); Mon, 7 Nov 2011 09:25:17 -0500 In-Reply-To: <20111107135923.GA17060@srcf.ucam.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Matthew Garrett Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-acpi@vger.kernel.org, stable@kernel.org On Monday, November 07, 2011 02:59:24 PM Matthew Garrett wrote: > 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 How do you intend to fix that? >>From description above it sounds as if this problem is not fixable from OS side. Thomas > rather than adding to the > blacklist, otherwise we'll just end up with another batch of broken > Dells later on.