From mboxrd@z Thu Jan 1 00:00:00 1970 From: Meelis Roos Subject: Re: Bisected regression: hang on i915 between 3.1.0-rc9 and 3.1.0 Date: Wed, 23 Nov 2011 10:54:10 +0200 (EET) Message-ID: References: <86vcqcf3da.fsf@sumi.keithp.com> <86obw3e133.fsf@sumi.keithp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp2.it.da.ut.ee (smtp2.it.da.ut.ee [193.40.5.67]) by gabe.freedesktop.org (Postfix) with ESMTP id A829E9E955 for ; Wed, 23 Nov 2011 00:54:11 -0800 (PST) In-Reply-To: <86obw3e133.fsf@sumi.keithp.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Keith Packard Cc: David Woodhouse , Linux Kernel list , dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org > > Yes, VT-x and VT-d are both enabled from BIOS setup. > > Any reason for that? We've found all kinds of problems with DMAR enabled > on these machines that is only resolved by completely turning it > off. You might try with intel_iommu=off and make sure that's stable. Well, there is reason for VT-x but actually none for VT-d because I am not giving out any PCI devices to virtual machines. Will also test witout it. -- Meelis Roos (mroos@linux.ee)