From owner-freebsd-desktop@FreeBSD.ORG Tue May 15 09:37:03 2012 Return-Path: Delivered-To: freebsd-desktop@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 96826106566C for ; Tue, 15 May 2012 09:37:03 +0000 (UTC) (envelope-from lstewart@freebsd.org) Received: from lauren.room52.net (lauren.room52.net [210.50.193.198]) by mx1.freebsd.org (Postfix) with ESMTP id 5577D8FC16 for ; Tue, 15 May 2012 09:37:03 +0000 (UTC) Received: from lstewart.caia.swin.edu.au (lstewart.caia.swin.edu.au [136.186.229.95]) by lauren.room52.net (Postfix) with ESMTPSA id 29B817E88D; Tue, 15 May 2012 19:37:02 +1000 (EST) Message-ID: <4FB223BD.3070208@freebsd.org> Date: Tue, 15 May 2012 19:37:01 +1000 From: Lawrence Stewart User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:10.0.2) Gecko/20120311 Thunderbird/10.0.2 MIME-Version: 1.0 To: Yevgen Krapiva References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.0 required=5.0 tests=UNPARSEABLE_RELAY autolearn=unavailable version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on lauren.room52.net Cc: freebsd-desktop@freebsd.org Subject: Re: How is monitor brightness is controlled ? X-BeenThere: freebsd-desktop@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Using and improving FreeBSD on the desktop List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 May 2012 09:37:03 -0000 On 05/13/12 17:55, Yevgen Krapiva wrote: > Hi everyone. > > Could somebody tell me what thing in FreeBSD is managing the monitor > brightess ? Given that the function keys don't work, check if you have any relevant sysctl options to play with. Most likely to find them under hw.acpi, but try grepping "sysctl -a" output for bright or lcd to see if anything comes up. > I've got Dell Inspiron laptop, FreeBSD 9.0 RELEASE and KDE4. > Pressing the functional combintation of Fn+F4/F5 does not have any effect. > In order to understand what's wrong I need to know in what direction I > should move. Getting the fn keys working requires some ACPI voodoo I'm not familiar with, so I'll have to defer to someone else to advise on that. The info at [1] might be a good starting point. The fn keys on my Toshiba R600 laptop started working only after I loaded the acpi_toshiba.ko kernel module. I note there's no similar module for Dell's so getting them working will probably require some fiddling. Cheers, Lawrence [1] http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi-debug.html