From owner-freebsd-chat@FreeBSD.ORG Sat Nov 21 20:15:00 2009 Return-Path: Delivered-To: freebsd-chat@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1F30C106566B for ; Sat, 21 Nov 2009 20:15:00 +0000 (UTC) (envelope-from brett@lariat.net) Received: from lariat.net (lariat.net [66.119.58.2]) by mx1.freebsd.org (Postfix) with ESMTP id A9D498FC0C for ; Sat, 21 Nov 2009 20:14:59 +0000 (UTC) Received: from anne-o1dpaayth1.lariat.net (hdl.lariat.net [66.119.58.133]) by lariat.net (8.9.3/8.9.3) with ESMTP id NAA02010; Sat, 21 Nov 2009 13:14:48 -0700 (MST) Message-Id: <200911212014.NAA02010@lariat.net> X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Sat, 21 Nov 2009 13:14:26 -0700 To: Dag-Erling Smørgrav , spellberg_robert From: Brett Glass In-Reply-To: <866393vekq.fsf@ds4.des.no> References: <200911200921.nAK9LKpf063202@lurza.secnetix.de> <4B06DD70.8030308@emailrob.com> <1AE59099C6D80E41BEB64A1768AFB4EA30ED5BAF@msxmbxnsprd18.acct.upmchs.net> <4B07451E.8020907@emailrob.com> <866393vekq.fsf@ds4.des.no> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; format=flowed Content-Transfer-Encoding: 8bit Cc: "Person, Roderick" , fbsd_chat Subject: Re: lcd monitor manufacturer recommendation request X-BeenThere: freebsd-chat@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Non technical items related to the community List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Nov 2009 20:15:00 -0000 At 12:54 PM 11/21/2009, Dag-Erling Smørgrav wrote: >A CRT has an electrom beam that sweeps across the screen left to right >and top to bottom, and the horizontal and vertical sync frequencies >control how fast the beam moves. An LCD panel does not have an electron >beam; it has discrete, individually adressable pixels. If you insist on >hooking it up to an analog port, it will have to convert the analog >signal to a digital signal in order to display it, and you will get >sampling artifacts, aliasing etc. I don't care how good you are at >writing modelines; you will never come up with one that looks better >than what you will get with a digital connection. Unfortunately, some monitors with digital interfaces are not compatible with some LCD displays, even though the sockets and cables look like they match up. For example, I recently tried to hook an Asus "Eee Box", which has an HDMI connector, up to a Samsung LCD display using a digital cable. Couldn't get it to work at all, no matter how I adjusted the settings on both. But when I used an analog adapter and cable, it worked on the first try at maximum resolution, with (fortunately) few or no noticeable artifacts. Analog isn't ideal, but it's a good fallback. --Brett Glass