From owner-freebsd-mobile@FreeBSD.ORG Thu Oct 21 14:53:42 2004 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 65D5116A4CE for ; Thu, 21 Oct 2004 14:53:42 +0000 (GMT) Received: from rproxy.gmail.com (rproxy.gmail.com [64.233.170.198]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1C84D43D3F for ; Thu, 21 Oct 2004 14:53:42 +0000 (GMT) (envelope-from kjelderg@gmail.com) Received: by rproxy.gmail.com with SMTP id 78so43378rnl for ; Thu, 21 Oct 2004 07:53:41 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:references; b=acmgJ50C98G9At3wroTT5LABIYS1zqLEJnvAhjNHl5h0Ss0o+ZRVu3iDmcO0zkodZCfBKSvQ519tJS7i2l96SKTXJE5tnbOWqbsCMh0ZTrFMqkw3jWZqMjD0j8le7qzgM/GzrI3IigZx32UIgLuqaj0j05WCUFN8nx5K8PMhtYY= Received: by 10.38.83.9 with SMTP id g9mr3079816rnb; Thu, 21 Oct 2004 07:53:40 -0700 (PDT) Received: by 10.38.15.69 with HTTP; Thu, 21 Oct 2004 07:53:40 -0700 (PDT) Message-ID: Date: Thu, 21 Oct 2004 09:53:40 -0500 From: Eric Kjeldergaard To: Jochen Gensch In-Reply-To: <41779562.8020303@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit References: <4176DECC.70606@gmx.de> <20041021011752.GE10871@empiric.icir.org> <41779562.8020303@gmx.de> cc: freebsd-mobile@freebsd.org Subject: Re: Turning off screen completely X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Eric Kjeldergaard List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Oct 2004 14:53:42 -0000 On Thu, 21 Oct 2004 12:54:26 +0200, Jochen Gensch wrote: > Bruce M Simpson wrote: > > > I have noticed that DPMS > > standby seems to turn off the backlight on my T40 whilst screensavers > > are running. > > Doesn't work here. I can run a xset dpms force standby, suspend... the > back light always stays on. I'm curious, what is the technical > background to this? Who / what controls this behaviour? BTW: what is > that radeon.ko module needed for? I thought X.org uses its own driver? There are 2 major factors that are involved. One is a driver from X. This driver is at the root of (almost) all display issues that people commonly write about. The other driver is a kernel driver for FreeBSD. This driver is used for many things often including power management and direct access. The relationship is not near this simple, IRL. It seems that I did see a mailing list submission and even a kernel patch, IIRC. Perhaps more googling (I know I'm not being much help in that part) could root out that message. I'll send it to you if I see it again. -- If I write a signature, my emails will appear more personalised.