From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aaron Lu Subject: Re: Patch Thinkpad X201T backlight Date: Fri, 3 Jun 2016 14:16:59 +0800 Message-ID: <20160603061655.GB8618@aaronlu.sh.intel.com> References: <8737p8aq7k.fsf@quengel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mga09.intel.com ([134.134.136.24]:34076 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751727AbcFCGRC (ORCPT ); Fri, 3 Jun 2016 02:17:02 -0400 Content-Disposition: inline In-Reply-To: <8737p8aq7k.fsf@quengel.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Ralf Gerbig Cc: "Rafael J. Wysocki" , linux-acpi@vger.kernel.org On Sun, May 22, 2016 at 07:23:59PM +0200, Ralf Gerbig wrote: > Hi, > > the X201 Tablet needs the same treatmant as the X201s, > otherwise you can't change levels. I guess /sys/class/backlight/intel_backlight interface doesn't work? > > The patch is against 4.5.5 stable, but should apply to all recent > kernels. > > Please be gentle, I am neither a programmer nor a developer. > > If you have questions, feel free to ask, but don't expect an answer in > the next 10 to 20 days (going to hospital). Hope you are well. Can you please, when you have time, attach your acpidump? Perhaps file a new bug @https://bugzilla.kernel.org under ACPI/Power-Video category and put the acpidump there, thanks. Regards, Aaron