From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: has the i915 "black screen" boot issue returned? Date: Thu, 27 Jan 2011 10:15:01 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 5FB7F9E7A1 for ; Thu, 27 Jan 2011 02:15:04 -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" , dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On Wed, 26 Jan 2011 06:37:20 -0500 (EST), "Robert P. J. Day" wrote: > > after suffering through the i915 "black screen" issue for a while, > it was a relief that it finally seemed to be resolved with 2.6.37 or > something in tha vicinity. but i just built and booted a 2.6.38-rc2+ > kernel on my ubuntu 10.10 system and it once again boots to a black > screen. > > is this a new known issue? has anyone else seen this? It all depends. There is a new ACPI backlight issue causing grief, aside from that and lingering issues with the legacy backlight combination mode, I don't think there was a new i915 KMS regression. (We had regressions elsewhere and finally fixed up a few old regressions for UMS and DRI1 and various other OOPS-on-boot. And suspend is a bit hit and miss.) For extra fun, it appears that sched_autocgroup can trigger a leak of pinned bo eventually hitting a BUG. That's one I'm keen to reproduce. Without knowing your chipset and seeing a dmesg, I can only guess which problem you are most likely to have hit. -Chris -- Chris Wilson, Intel Open Source Technology Centre