Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753061Ab3HBNwu (ORCPT ); Fri, 2 Aug 2013 09:52:50 -0400 Received: from hydra.sisk.pl ([212.160.235.94]:52116 "EHLO hydra.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752845Ab3HBNws (ORCPT ); Fri, 2 Aug 2013 09:52:48 -0400 From: "Rafael J. Wysocki" To: Felipe Contreras Cc: Josep Lladonosa , Aaron Lu , Borislav Petkov , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, lkml , ACPI Devel Maling List Subject: Re: i915 backlight Date: Fri, 02 Aug 2013 16:03 +0200 Message-ID: <1544218.2BR9ul04Pj@vostro.rjw.lan> User-Agent: KMail/4.9.5 (Linux/3.10.0+; KDE/4.9.5; x86_64; ; ) In-Reply-To: References: <20130731162252.GC4724@pd.tnic> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1193 Lines: 34 On Friday, August 02, 2013 01:48:37 AM Felipe Contreras wrote: > On Fri, Aug 2, 2013 at 1:25 AM, Josep Lladonosa wrote: > > Hello, > > > > I am using a Lenovo Edge E530 and, with kernel 3.11.0-rc3, I had to > > change to this parameter to the kernel boot: > > > > > > GRUB_CMDLINE_LINUX="acpi_osi=\"!Windows 2012\"" > > I think it's pretty obvious that for the time being we need to > blacklist a ton of machines so they boot without this OSI. In fact, in > might make sense to simply remove the OSI completely for all machines > (for now). That would have made sense 6 months ago, but not today. The reason is that you don't really know what's affected by that and I'm pretty sure it's not only backlight. So no, we won't do that. We *might* blacklist machines that shipped with Windows 7, but whose BIOSes call the Windows 8 OSI, because there's a good chance they weren't really tested with Windows 8. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/