From owner-freebsd-current@FreeBSD.ORG Mon Nov 29 21:14:26 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8AF9B106566B; Mon, 29 Nov 2010 21:14:26 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 5C9208FC19; Mon, 29 Nov 2010 21:14:26 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id 04D3A46B2E; Mon, 29 Nov 2010 16:14:26 -0500 (EST) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id DF4948A009; Mon, 29 Nov 2010 16:14:24 -0500 (EST) From: John Baldwin To: Doug Barton Date: Mon, 29 Nov 2010 16:14:16 -0500 User-Agent: KMail/1.13.5 (FreeBSD/7.3-CBSD-20101102; KDE/4.4.5; amd64; ; ) References: <4CF1A4DA.1080908@FreeBSD.org> <201011291009.15466.jhb@freebsd.org> <4CF416AA.60502@FreeBSD.org> In-Reply-To: <4CF416AA.60502@FreeBSD.org> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Message-Id: <201011291614.17180.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (bigwig.baldwin.cx); Mon, 29 Nov 2010 16:14:25 -0500 (EST) X-Virus-Scanned: clamav-milter 0.96.3 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-1.9 required=4.2 tests=BAYES_00 autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on bigwig.baldwin.cx Cc: Adam Vande More , freebsd-current@freebsd.org Subject: Re: Should green_saver.ko shut off a laptop's backlight? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Nov 2010 21:14:26 -0000 On Monday, November 29, 2010 4:10:02 pm Doug Barton wrote: > On 11/29/2010 07:09, John Baldwin wrote: > > On Saturday, November 27, 2010 11:30:56 pm Adam Vande More wrote: > >> On Sat, Nov 27, 2010 at 6:39 PM, Doug Barton wrote: > >> > >>> My recollection is that green_saver should turn off an LCD backlight, but I > >>> just loaded it up on my laptop and it's not doing so. It does remove the > >>> text from the screen, but the backlight is still on (i.e., it is doing > >>> exactly what blank_saver does). > >>> > >>> When running X DPMS works on that same laptop, so I know the hardware is > >>> capable. This is 9-current amd64 at r214025. Any suggestions are welcome. > >>> > >> > >> It's never worked for me either and this has been around awhile. > >> > >> http://www.freebsd.org/cgi/query-pr.cgi?pr=114928&cat= > > > > green_saver just ask's your video card's BIOS to shut the screen off. If the > > BIOS doesn't turn off the backlight, that is the BIOS's problem, not > > something we can fix. > > Ok, so does the attached seem reasonable? I would say 'If the monitor and the video card's BIOS support it' because both things have to be true for green_saver to work. and/or implies that only one has to be true. I'm not sure the second paragraph is truly needed since I've seen it work fine with LCD's on other laptops and other external monitors as well. I think simply adding the text about the video card's BIOS is sufficient (and a definite improvement). -- John Baldwin