From owner-freebsd-x11@FreeBSD.ORG Fri Jul 13 16:21:15 2012 Return-Path: Delivered-To: freebsd-x11@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id C0FDB10657BE for ; Fri, 13 Jul 2012 16:21:15 +0000 (UTC) (envelope-from sendtomatt@gmail.com) Received: from mail-gg0-f182.google.com (mail-gg0-f182.google.com [209.85.161.182]) by mx1.freebsd.org (Postfix) with ESMTP id 735DC8FC12 for ; Fri, 13 Jul 2012 16:21:15 +0000 (UTC) Received: by ggnm2 with SMTP id m2so4326553ggn.13 for ; Fri, 13 Jul 2012 09:21:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=+z8tKAqdImZxgl4QQKlcSoag7caG9r+dAuaSIdLNgm8=; b=S/JgNHOVZW8tkIIhbaQFi2YdDtOWPQRCZO2Vz+nblp4761Gp7TCEQHSW0eaAgBKHis dBVqagTThd4zEKbYqZgZQJCk7rzgRsXFZHGfu4M8MlhgIKuvD4+Rug/BXvrTKhI7U1TU ZxlM9D5pmw4aQ1JZY4/e/zQEtMrQmuUo9aZXjGLUh1Xr90KxctxEQ0iHUpOz/eMK8qKD 8htpuM29LUSYwO57NeKH0yNgT2WK12F+utytb3ttq3C+CGi6AbgLUnJ7sFoMI/DvWhmZ k5lbLolXVj1wpZFp8MF+VIUY0BvZcFradha/AVZNsAY62snukLyvCl6VJlOQQ2TOVX+o cudQ== Received: by 10.66.72.163 with SMTP id e3mr3231500pav.42.1342196468524; Fri, 13 Jul 2012 09:21:08 -0700 (PDT) Received: from flatline.local (70-36-223-239.dsl.dynamic.sonic.net. [70.36.223.239]) by mx.google.com with ESMTPS id jp10sm6282213pbb.16.2012.07.13.09.21.06 (version=SSLv3 cipher=OTHER); Fri, 13 Jul 2012 09:21:07 -0700 (PDT) Message-ID: <50004AF0.1010400@gmail.com> Date: Fri, 13 Jul 2012 09:21:04 -0700 From: matt User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:13.0) Gecko/20120619 Thunderbird/13.0.1 MIME-Version: 1.0 To: SicoSico References: <1342085203648-5726207.post@n5.nabble.com> <201207121653.32046.erichfreebsdlist@ovitrap.com> <1342094808885-5726236.post@n5.nabble.com> In-Reply-To: <1342094808885-5726236.post@n5.nabble.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-x11@freebsd.org Subject: Re: Lenovo Y570 backlight X-BeenThere: freebsd-x11@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: X11 on FreeBSD -- maintaining and support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Jul 2012 16:21:15 -0000 On 07/12/12 05:06, SicoSico wrote: > Thanks for your reply Erich Dollansky-2, > > #kldload acpi_call > #acpi_call -p '\VBRC' -i 8 > Unknown object type '-1515870811' > > -- > View this message in context: http://freebsd.1045724.n5.nabble.com/Lenovo-Y570-backlight-tp5726207p5726236.html > Sent from the freebsd-x11 mailing list archive at Nabble.com. > _______________________________________________ > freebsd-x11@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-x11 > To unsubscribe, send any mail to "freebsd-x11-unsubscribe@freebsd.org" > You could also try kldloading acpi_video and using its sysctl interface (man acpi_video, I'm not on a machine it attaches to right now). VBRC is non-standard (as far as I know), BCL I think is the ACPI "standard" way of talking to the backlight. For some values of standard, anyway. BCL is what acpi_video looks for and talks to, but you may have a non-standard brightness acpi call. If that's the case, you'd have to dig through an ACPI dump for graphics references and try to find stuff that looks brightness related. With any luck, Lenovo uses a more traditional ACPI interface to it's non-ThinkPad lines and acpi_video will work... Matt