From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932180AbaEIQO5 (ORCPT ); Fri, 9 May 2014 12:14:57 -0400 Received: from mga11.intel.com ([192.55.52.93]:32556 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753459AbaEIQO4 (ORCPT ); Fri, 9 May 2014 12:14:56 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,1019,1389772800"; d="scan'208";a="536548626" Date: Fri, 9 May 2014 17:14:38 +0100 From: Damien Lespiau To: =?iso-8859-1?Q?J=F6rg?= Otte Cc: Daniel Vetter , David Airlie , Dave Airlie , intel-gfx , Linus Torvalds , Linux Kernel Mailing List Subject: Re: [Intel-gfx] [3.14.0-rc4] regression: drm FIFO underruns Message-ID: <20140509161438.GH31479@strange.amr.corp.intel.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 09, 2014 at 06:11:37PM +0200, Jörg Otte wrote: > > Jörg, can you please boot with drm.debug=0xe, reproduce the issue and > > then attach the complete dmesg? Please make sure that the dmesg > > contains the boot-up stuff too. > > > > Thanks, Daniel > Here it is. I should mention it only happens at boot-up. [ 0.374095] [drm] Wrong MCH_SSKPD value: 0x20100406 [ 0.374096] [drm] This can cause pipe underruns and display issues. [ 0.374097] [drm] Please upgrade your BIOS to fix this. -- Damien