From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aaron Lu Subject: Re: [PATCH] acpi: blacklist win8 OSI for ASUS Zenbok Prime UX31A Date: Thu, 27 Jun 2013 10:37:00 +0800 Message-ID: <51CBA54C.6040703@intel.com> References: <1369037793-1559-1-git-send-email-felipe.contreras@gmail.com> <4224252.tpDZo1Wai9@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com ([134.134.136.24]:49974 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751782Ab3F0Cgi (ORCPT ); Wed, 26 Jun 2013 22:36:38 -0400 In-Reply-To: <4224252.tpDZo1Wai9@vostro.rjw.lan> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Felipe Contreras Cc: "Rafael J. Wysocki" , linux-acpi@vger.kernel.org, Len Brown On 06/26/2013 08:42 PM, Rafael J. Wysocki wrote: > On Wednesday, June 26, 2013 05:41:01 AM Felipe Contreras wrote: >> On Mon, May 20, 2013 at 3:16 AM, Felipe Contreras >> wrote: >>> Otherwise the backlight can't be changed, presumably because the DSDT >>> contains stub code when in conjunction with Windows 8. >>> >>> https://wiki.archlinux.org/index.php/ASUS_Zenbook_Prime_UX31A >>> >>> Signed-off-by: Felipe Contreras >> >> Hello? >> >> Is there anything wrong with this patch? > > We're going to fix this issue in a different way. Hi Felipe, Please reference a similar bug where ACPI video driver can't work for some thinkpad win8 laptops: https://bugzilla.kernel.org/show_bug.cgi?id=51231 And the proposed way to fix this issue is for all Win8 systems, the ACPI video backlight interface will be removed, leaving only GPU's backlight interface: https://lkml.org/lkml/2013/6/9/161 Thanks, Aaron