From owner-freebsd-mobile@FreeBSD.ORG Tue Jul 15 14:42:39 2003 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B3C9837B407 for ; Tue, 15 Jul 2003 14:42:39 -0700 (PDT) Received: from postal3.es.net (postal3.es.net [198.128.3.207]) by mx1.FreeBSD.org (Postfix) with ESMTP id A0D8E43F3F for ; Tue, 15 Jul 2003 14:42:38 -0700 (PDT) (envelope-from oberman@es.net) Received: from ptavv.es.net ([198.128.4.29]) by postal3.es.net (Postal Node 3) with ESMTP (SSL) id MUA74016; Tue, 15 Jul 2003 14:42:36 -0700 Received: from ptavv (localhost [127.0.0.1]) by ptavv.es.net (Tachyon Server) with ESMTP id 7DDAA5D08; Tue, 15 Jul 2003 14:42:36 -0700 (PDT) To: "Markus D." In-Reply-To: Message from Markus D. of "Tue, 15 Jul 2003 23:13:41 +0200." <30885.1058303621@www53.gmx.net> Date: Tue, 15 Jul 2003 14:42:36 -0700 From: "Kevin Oberman" Message-Id: <20030715214236.7DDAA5D08@ptavv.es.net> cc: mobile@freebsd.org Subject: Re: Turn off display/backlight X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Jul 2003 21:42:40 -0000 > Date: Tue, 15 Jul 2003 23:13:41 +0200 (MEST) > From: Markus D. > Sender: owner-freebsd-mobile@freebsd.org > > Hello, > > is there any way to turn off the display (aka screensaver) for the console > completely, with switching off the backlight of my laptop's lcd? I use > 5.1-Release now. With 4-stable I used the apm_saver, which did this. But now with > ACPI the apm_saver doesn't work anymore even if i turn apm on. This is a common issue with ACPI on laptops. I have it on my T30 and I have seen others with different brands and models report it. I don't have a fix at this time. (Since I don't work on ACPI code, I won't be finding it,) The work-around is to use apm and not ACPI. To switch to APM, edit /boot/loader.conf and add: apm_load="YES" Edit /boot/device.hints and add: hint.acpi.0.disabled="1" and change the value of hint.apm.0.disabled to "0" Make sure that your rc.conf contains: apm_enable="YES" Once that is done, you should be able to turn off the back-light any way you could under V4. Hopefully APM will continue to mature and these issues will get settled over a bit of time. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634