Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756457Ab3GYO7s (ORCPT ); Thu, 25 Jul 2013 10:59:48 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:47229 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755994Ab3GYO7o (ORCPT ); Thu, 25 Jul 2013 10:59:44 -0400 Message-ID: <1374764373.5374.42.camel@fourier> Subject: Re: Linux 3.11-rc2 (acpi backlight, revert) From: Kamal Mostafa To: Daniel Vetter Cc: "Rafael J. Wysocki" , James Hogan , Aaron Lu , Kalle Valo , Linus Torvalds , Linux Kernel Mailing List , Matthew Garrett , "Rafael J. Wysocki" , Steven Newbury , ACPI Devel Maling List , =?ISO-8859-1?Q?J=F6rg?= Otte , Martin Steigerwald , Daniel Vetter , intel-gfx , Jani Nikula Date: Thu, 25 Jul 2013 07:59:33 -0700 In-Reply-To: <20130725144625.GO5939@phenom.ffwll.local> References: <9012759.Alzqtdvh5b@vostro.rjw.lan> <2218913.HKGjJcYT1G@vostro.rjw.lan> <1374763397.5374.30.camel@fourier> <20130725144625.GO5939@phenom.ffwll.local> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-ylRWJXiniZUHIcCQ9j2b" X-Mailer: Evolution 3.6.4-0ubuntu1 Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3573 Lines: 96 --=-ylRWJXiniZUHIcCQ9j2b Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2013-07-25 at 16:46 +0200, Daniel Vetter wrote: > On Thu, Jul 25, 2013 at 07:43:17AM -0700, Kamal Mostafa wrote: > > On Thu, 2013-07-25 at 15:00 +0200, Rafael J. Wysocki wrote: > > > On Monday, July 22, 2013 09:54:21 PM Rafael J. Wysocki wrote: > > > > On Monday, July 22, 2013 11:11:54 AM Linus Torvalds wrote: > > > > > On Mon, Jul 22, 2013 at 6:02 AM, Rafael J. Wysocki = wrote: > > > > > > > > > > > > Linus, do you want me to send a pull request reverting 8c5bd7a = and efaa14c? > > > > >=20 > > > > > Yes, but let's wait a while. Not because I think we'll fix the pr= oblem > > > > > (hey, miracles might happen), but because I think it would be use= ful > > > > > to couple the reverts with information about the particular machi= nes > > > > > that broke (and the people who reported it). So that when we > > > > > inevitably try again, we can perhaps get some testing effort with > > > > > those machines/people. > > > > >=20 > > > > > It doesn't seem to be a show-stopped for a large number of people= , so > > > > > there's no huge hurry. I'd suggest doing the revert just in time = for > > > > > rc3, but waiting until then to gather info about people who see > > > > > breakage. > > > > >=20 > > > > > Sound like a plan? > > > >=20 > > > > Yes, it does. > > >=20 > > > OK, time to revert I guess. > > >=20 > > > James, Kamal, Steven, J=C3=B6rg, Martin, Kalle, please check if the a= pppended patch > > > fixes the backlight for you. > >=20 > > Yes, this revert patch does re-enable backlight control for the affecte= d > > Dell XPS13 models. >=20 > Are these the same models that neeed the special quirk to not write > PCH_PWM_ENABLE? Or do they need both? Hi Daniel- Yes, these are the same models (Dell XPS13) that need the PCH_PWM_ENABLE quirk, but that's not related to this ACPI problem... All of the XPS13 models still need the PCH_PWM_ENABLE quirk which is now present in mainline (e85843b "drm/i915: quirk no PCH_PWM_ENABLE for Dell XPS13 backlight"). Separately from that, some of the XPS13 models were _also_ adversely affected (as were some other machines) by the ACPI changes that are about to be reverted. -Kamal --=-ylRWJXiniZUHIcCQ9j2b Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABCAAGBQJR8T1VAAoJEHqwmdxYrXhZ3BcP/361yS+awomMVvSAQK0NnkC2 a1MbWxrlK1Ck1KXvkk0Xx5JZrQ7X+Kfsjc8apDaX+WAYmAnymzAH5NmMF7PEKQaP mtJ6RGZOAO6K/I/pZpNGTPXcUic+r51E/dkjlfFTe1kDYGVXe5T76urx1UoeCemS kX+WfsJZYHxfA/1yXAgyDK0wcAwSDNgcT9jL0KE7EWLwawmzrdXNAiF3HgKSSyz3 EjMSAAVLj8dMeitQE1V9oIH3d5Ig43aWHI7D1wi2ZFGRn2Q7XZ5ORm5AvZVqGa+9 JOMjIdZ//4HXcgLxv5n4UHSRxNn50Mm15NWSjNhsfx+z3nbZcRi/2V9lglB2yhhk bT4QxkfmYwlmYbEoSRZk6bTjeJxAeCli+BLYyDmHyiXmhz19uPbs+N5JLh4DlBea 0/O+1pemW3Z+8qGO88F+mSgsxip1nEbcqtuuY40NHfWquPo9R6LXRgTXSy3g3tsh AvZ5KXQsIteLCNgv2veiBV1GUhLaLtwdw63vSgsVpsLYZDUfmVqzNi+9O9bUVRpI oOdmTg1TlyVzIJH4pQaskxbi0o/J+CgyWt0KAHKiCel5bmbdExotrao870A5yk9b 5IOBVMMxtyLka12QcjxSvup01OTt+7DxbHMChWMxWpVMvQqW9h7Bd47rpRV8/UJ1 ZeNL1Df3eRW6lK9DX/NV =wJNb -----END PGP SIGNATURE----- --=-ylRWJXiniZUHIcCQ9j2b-- -- 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/