From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Subject: Re: Black screen on boot with next-0517 Date: Wed, 18 May 2011 09:17:44 -0700 Message-ID: <20110518091744.7da47e31@jbarnes-desktop> References: <20110518131624.GA2285@fly.eduroam.rwth-aachen.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from oproxy7-pub.bluehost.com (oproxy7-pub.bluehost.com [67.222.55.9]) by gabe.freedesktop.org (Postfix) with SMTP id DF06A9EBA2 for ; Wed, 18 May 2011 09:18:00 -0700 (PDT) In-Reply-To: <20110518131624.GA2285@fly.eduroam.rwth-aachen.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Cedric Sodhi Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Wed, 18 May 2011 15:16:24 +0200 Cedric Sodhi wrote: > I'm troubled by a regression that must have occurred somewhere between > next-05-11 and next-05-17, that is, the screen blacks out (backlight is > still lit and can be regulated) on boot. > > i915.modeset=0 > > Will cause the console to visually freeze instead. > > This is a SWITCHEROO setup with a Radeon, but I blame intel for that. > Dmesg attached. Blackout occurs at arround 1.3559. After that, when the > backlight is brought back up, the screen is empty/black but lit. > > (Not to mention, backlight goes back to 0 and has to be brought up, as > it always has been - see bug report) Please try http://git.kernel.org/?p=linux/kernel/git/keithp/linux-2.6.git;a=commitdiff;h=61e499bf05254aca0fab08e2c91643331a15e725 -- Jesse Barnes, Intel Open Source Technology Center