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, 18 Jul 2013 09:04:03 +0800 Message-ID: <51E73F03.90901@intel.com> References: <1369037793-1559-1-git-send-email-felipe.contreras@gmail.com> <4224252.tpDZo1Wai9@vostro.rjw.lan> <51CBA54C.6040703@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mga11.intel.com ([192.55.52.93]:35372 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756630Ab3GRBDV (ORCPT ); Wed, 17 Jul 2013 21:03:21 -0400 In-Reply-To: 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 07/17/2013 11:42 PM, Felipe Contreras wrote: > On Wed, Jun 26, 2013 at 9:37 PM, Aaron Lu wrote: > >> 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. I took a look at the thread and the patches, so essentially > when those patches are applied, I should expect the same behavior as > acpi_backlight=vendor, right? If so, that doesn't work correctly in > this laptop. In this laptop intel backlight works through X, but when > I set the level to 0 everything is black (it works fine in ACPI), and That sounds a bug in i915's handling of backlight to me, perhaps file a bug for that? For component, please choose Drivers/DRI-intel. > the keyboard keys don't work. I don't see why the backlight hotkey stops working, we have kept ACPI's event notification handling for Win8 systems. Worth filing a bug too :-) For components, please choose ACPI/Video. BTW, what's the situation after you try the following 3 patches: https://patchwork.kernel.org/patch/2829342/ https://patchwork.kernel.org/patch/2829344/ https://patchwork.kernel.org/patch/2829339/ Thanks, Aaron