From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julian Wollrath Subject: [Regression]: Changing brightness does not work with v3.16-rc4 Date: Sat, 12 Jul 2014 18:06:36 +0200 Message-ID: <20140712180636.698e2e4c@saldaea> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from mout.web.de ([212.227.15.3]:64571 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751435AbaGLQGk (ORCPT ); Sat, 12 Jul 2014 12:06:40 -0400 Received: from saldaea ([84.134.38.250]) by smtp.web.de (mrweb003) with ESMTPSA (Nemesis) id 0M4ZVE-1WMwFN22SS-00yfxg for ; Sat, 12 Jul 2014 18:06:37 +0200 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Hi, changing the brightness on my Thinkpad X230 with Intel HD4000 graphics, stopped working after commit 886129a8eebe (ACPI / video: change acpi-video brightness_switch_enabled default to 0). Changing it back to 1, fixes the problem, if "acpi_osi=!Windows 2012" is also set. Before that commit just setting "acpi_osi=!Windows 2012" was enough to get changing the brightness working. With best regards, Julian Wollrath