From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: has the i915 "black screen" boot issue returned? Date: Fri, 28 Jan 2011 09:29:53 +0000 Message-ID: <0d30dc$kt3gd6@orsmga001.jf.intel.com> References: <1bdc18$jdgfni@fmsmga002.fm.intel.com> <0d30dc$ksovh8@orsmga001.jf.intel.com> <849307$bbem1h@azsmga001.ch.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id 4D1699E7E2 for ; Fri, 28 Jan 2011 01:29:57 -0800 (PST) In-Reply-To: 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: "Robert P. J. Day" Cc: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On Fri, 28 Jan 2011 04:24:17 -0500 (EST), "Robert P. J. Day" wrote: > On Fri, 28 Jan 2011, Chris Wilson wrote: > > > Well, we have two endpoints, so let git attack: > > > > $ git bisect start > > $ git bisect good 58bbf018a70c562437eeae121a5d021ba7fe56a5 > > $ git bisect bad abb72c828878a2c69b2cfb33ac30007c8ecd735e > > > > That shouldn't take more than a few recompiles to identify the > > troublemaker. > > ok, i can get to that in a bit. might take a while since this > system is not exactly a screamer but i'm curious -- have you heard no > other reports of people running into this issue? i'm going to be > embarrassed if it turns out it's something *i've* done but, at this > point, it seems fairly reproducible. This is the first I'm aware of. It could just be the tip of the iceberg... > are there any kernel command-line parms i might try that would be > informative? anything involving modesetting? Sure: add drm.debug=0xe to your boot parameters (or to your modprobe conf). -Chris -- Chris Wilson, Intel Open Source Technology Centre