From owner-freebsd-x11@FreeBSD.ORG  Sat Jul 14 00:16:04 2012
Return-Path: <owner-freebsd-x11@FreeBSD.ORG>
Delivered-To: freebsd-x11@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 378E1106566C
	for <freebsd-x11@freebsd.org>; Sat, 14 Jul 2012 00:16:04 +0000 (UTC)
	(envelope-from resuscitated_wael@hotmail.com)
Received: from sam.nabble.com (sam.nabble.com [216.139.236.26])
	by mx1.freebsd.org (Postfix) with ESMTP id 0E93C8FC12
	for <freebsd-x11@freebsd.org>; Sat, 14 Jul 2012 00:16:04 +0000 (UTC)
Received: from [192.168.236.26] (helo=sam.nabble.com)
	by sam.nabble.com with esmtp (Exim 4.72)
	(envelope-from <resuscitated_wael@hotmail.com>) id 1Spq1j-0002Te-AM
	for freebsd-x11@freebsd.org; Fri, 13 Jul 2012 17:16:03 -0700
Date: Fri, 13 Jul 2012 17:16:03 -0700 (PDT)
From: SicoSico <resuscitated_wael@hotmail.com>
To: freebsd-x11@freebsd.org
Message-ID: <1342224963315-5726726.post@n5.nabble.com>
In-Reply-To: <50004AF0.1010400@gmail.com>
References: <1342085203648-5726207.post@n5.nabble.com>
	<201207121653.32046.erichfreebsdlist@ovitrap.com>
	<1342094808885-5726236.post@n5.nabble.com>
	<50004AF0.1010400@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
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 <freebsd-x11.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-x11>,
	<mailto:freebsd-x11-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-x11>
List-Post: <mailto:freebsd-x11@freebsd.org>
List-Help: <mailto:freebsd-x11-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-x11>,
	<mailto:freebsd-x11-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 14 Jul 2012 00:16:04 -0000

Thanks for your reply Matt,

I don't know how to use BCL, but I tried:
#acpi_call -p '\BCL' -i 8
Unknown object type '-1515870811' 

acpi_video doesn't work for me, it doesn't affect the backlight even though
the value of brightness changes:
#kldload acpi_video
#sysctl hw.acpi.video.lcd0.active=1
hw.acpi.video.lcd0.active: 0 -> 0
#sysctl hw.acpi.video.lcd0.brightness=30
hw.acpi.video.lcd0.brightness: 70 -> 30

Digging through acpi dump is very tiring and I can't actually read it, I
don't know what I am looking for and there are hundreds of strings to try
using acpi_call

for example, as far as i understand this should disable intel graphics card,
but it does nothing:
#acpi_call -p '\_SB.PCI0.PEG0.PEGP._OFF'
0


--
View this message in context: http://freebsd.1045724.n5.nabble.com/Lenovo-Y570-backlight-tp5726207p5726726.html
Sent from the freebsd-x11 mailing list archive at Nabble.com.