From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yves-Alexis Perez Subject: Re: [PATCH v2 0/3] Fix Win8 backlight issue Date: Fri, 20 Sep 2013 15:00:15 +0200 Message-ID: <1379682015.9746.3.camel@oban> References: <1379409796-29350-1-git-send-email-aaron.lu@intel.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1802663373==" Return-path: In-Reply-To: <1379409796-29350-1-git-send-email-aaron.lu@intel.com> 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: Aaron Lu Cc: Matthew Garrett , Seth Forshee , intel-gfx@lists.freedesktop.org, Felipe Contreras , Henrique de Moraes Holschuh , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, "Rafael J. Wysocki" , linux-acpi@vger.kernel.org, Lee Chun-Yi , Richard Purdie , Igor Gnatenko List-Id: linux-acpi@vger.kernel.org --===============1802663373== Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-15JMR/uvGZvL3AygEp60" --=-15JMR/uvGZvL3AygEp60 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On mar., 2013-09-17 at 17:23 +0800, Aaron Lu wrote: > v1 has the subject of "Rework ACPI video driver" and is posted here: > http://lkml.org/lkml/2013/9/9/74 > Since the objective is really to fix Win8 backlight issues, I changed > the subject in this version, sorry about that. >=20 > This patchset has three patches, the first introduced a new API named > backlight_device_registered in backlight layer that can be used for > backlight interface provider module to check if a specific type > backlight > interface has been registered, see changelog for patch 1/3 for > details. > Then patch 2/3 does the cleanup to sepeate the backlight control and > event delivery functionality in the ACPI video module and patch 3/3 > solves some Win8 backlight control problems by avoiding register ACPI > video's backlight interface if: > 1 Kernel cmdline option acpi_backlight=3Dvideo is not given; > 2 This is a Win8 system; > 3 Native backlight control interface exists. I've tested this on my x230 (using pure UEFI with CSM disabled). As far as I can tell, it works as I would expect: - brightness keys work in initramfs, in console after boot, in lightdm prompt and in Xfce (wether or not xfce4-power-manager is running). I don't have brightness notifications (from xfce4-power-manager) but I don't usually need them so I'm fine with that. Regards, --=20 Yves-Alexis --=-15JMR/uvGZvL3AygEp60 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 v1.4.14 (GNU/Linux) iQEcBAABCAAGBQJSPEbfAAoJEG3bU/KmdcClZxwH/1p/b8ooRZyWt7n+FZufMER3 665uuKlwgxRmd44M7XoN9M0IIGbNm6srEReA1OEF1lRnhzJLS4fGYXrcAAExheCV vA8Lk15FJlF7XjLVqtQGw3G0BjovolIB5XQCq9F3gom//liAYlhXOnH4sJMSFgu5 /vP8C+BtpBusxow6JQIMD7UvTpCWpM6ImMC/C3Dj38UxtuPlEx5XbuufU1mnxpSe qs7nUoFhKP6/Dcp+HQuzCBpKdAQQzgGcr0c74UeTq2MA+vTTgFezQsDExV+LTxQ/ DvKV9J0ChDxUR8PDwC/rMRvu/QghukoGoHCT90V0+ubBMVOMdHJWsFKT59cAt9c= =ctoj -----END PGP SIGNATURE----- --=-15JMR/uvGZvL3AygEp60-- --===============1802663373== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx --===============1802663373==--