From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: regression since 2.6.36: backlight in sony-laptop not working Date: Fri, 12 Nov 2010 03:44:23 +0000 Message-ID: <20101112034423.GA7407@srcf.ucam.org> References: <20101104142915.GC7650@gamma.logic.tuwien.ac.at> <20101110035833.GB3029@kamineko.org> <20101111235000.GA6651@gamma.logic.tuwien.ac.at> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([93.93.128.6]:44485 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751139Ab0KLDo3 (ORCPT ); Thu, 11 Nov 2010 22:44:29 -0500 Content-Disposition: inline In-Reply-To: <20101111235000.GA6651@gamma.logic.tuwien.ac.at> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Norbert Preining Cc: Mattia Dongili , linux-kernel@vger.kernel.org, ACPI Devel Mailing List On Fri, Nov 12, 2010 at 08:50:00AM +0900, Norbert Preining wrote: > On Mi, 10 Nov 2010, Mattia Dongili wrote: > > It's ages sony_laptop doesn't change, it may be some other change in the > > acpi layer that causes this. > > Seems so that the sys files have changed to new locations: > /sys/devices/virtual/backlight/acpi_video0/brightness > > (mind the additional "virtual") > as well as thermal zone etc etc. > > Could that explain the problem? Only if you have some wonderfully badly written software. What are you using to control the backlight? Also, I'd note that in this case your backlight is controlled via ACPI, not sony-laptop. -- Matthew Garrett | mjg59@srcf.ucam.org