From owner-freebsd-desktop@FreeBSD.ORG Tue May 15 13:10:24 2012 Return-Path: Delivered-To: freebsd-desktop@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8075410656AE; Tue, 15 May 2012 13:10:24 +0000 (UTC) (envelope-from ykrapiva@gmail.com) Received: from mail-bk0-f54.google.com (mail-bk0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id D30008FC16; Tue, 15 May 2012 13:10:23 +0000 (UTC) Received: by bkvi18 with SMTP id i18so5239032bkv.13 for ; Tue, 15 May 2012 06:10:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:subject:date:user-agent:references:in-reply-to:cc :mime-version:content-type:content-transfer-encoding:message-id; bh=SjiwoY+FZejNONsE2uPIALCHl9vAec0scc15Il+mgJs=; b=Kq9NZc0dk56EK2Kw2WzHPzBmyQ+BBWayOXfWnuqoz9QR9SE8rnbLgDC/lWCfvD0JEt hyiqctdnp1WdKpoLR8JBKdoAkQFx2Y3xnthFzxIiV/U9sVf0lk9iKcYeRigX+2Mj6fCT gERF45A0CETQToCwLtazLveaztrBxAfDyRdXR7qHzNT4+LbMawfyWG6rjiEMYs8vLGSM DM03rcff3RRHzbv+KuNdsQAYCJ9VtNwreYUl4EMjN8gA3oaoP2q3YwEd7N/0/Qs5TuJb sEPA0iX5SlDF7zaV3ZIBwf0GauYWfvHQ0R8Nnb9va1OaAE2zEOjsfe7oX8oKRMX4HEeA LNmQ== Received: by 10.204.153.6 with SMTP id i6mr1362189bkw.114.1337087422608; Tue, 15 May 2012 06:10:22 -0700 (PDT) Received: from devel-pc.localnet ([87.245.220.4]) by mx.google.com with ESMTPS id u8sm41649046bks.0.2012.05.15.06.10.17 (version=SSLv3 cipher=OTHER); Tue, 15 May 2012 06:10:20 -0700 (PDT) From: Ievgen Krapyva To: Lawrence Stewart Date: Tue, 15 May 2012 16:10:15 +0300 User-Agent: KMail/1.13.7 (FreeBSD/9.0-RELEASE; KDE/4.7.3; amd64; ; ) References: <4FB223BD.3070208@freebsd.org> In-Reply-To: <4FB223BD.3070208@freebsd.org> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201205151610.15817.ykrapiva@gmail.com> 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 13:10:24 -0000 Thank you, Stewart, I've already got some knowledge and looked throught the variables, there is nothing similar in there. devel-pc# sysctl -a | grep lcd devel-pc# sysctl -a | grep brightness I've also tried loading acpi_video.ko, that also does not work. In fact none of the Fn+ combintations work on my laptop, except of Fn+F2 (turns on/off Wireless devices). I feel it's not under control of FreeBSD rather BIOS is doing it (correct me if I'm wrong). Pressing this combination just turns off Wi-Fi on a hardware level, in FreeBSD I can see the effect by examining the contents of dmesg: wlan0: link state changed to DOWN I assume I should move in the direction of ACPI, right ? Best regards, Ievgen On Tuesday 15 May 2012 12:37:01 you wrote: > 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