Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753979Ab0KLDoa (ORCPT ); Thu, 11 Nov 2010 22:44:30 -0500 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 Date: Fri, 12 Nov 2010 03:44:23 +0000 From: Matthew Garrett To: Norbert Preining Cc: Mattia Dongili , linux-kernel@vger.kernel.org, ACPI Devel Mailing List Subject: Re: regression since 2.6.36: backlight in sony-laptop not working 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 Content-Disposition: inline In-Reply-To: <20101111235000.GA6651@gamma.logic.tuwien.ac.at> User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 932 Lines: 24 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/