Date: Sat, 21 Nov 2009 20:54:29 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: spellberg_robert <emailrob@emailrob.com> Cc: "Person, Roderick" <personrp@UPMC.EDU>, fbsd_chat <freebsd-chat@freebsd.org> Subject: Re: lcd monitor manufacturer recommendation request Message-ID: <866393vekq.fsf@ds4.des.no> In-Reply-To: <4B07451E.8020907@emailrob.com> (spellberg robert's message of "Sat, 21 Nov 2009 01:40:46 %2B0000") References: <200911200921.nAK9LKpf063202@lurza.secnetix.de> <4B06DD70.8030308@emailrob.com> <1AE59099C6D80E41BEB64A1768AFB4EA30ED5BAF@msxmbxnsprd18.acct.upmchs.net> <4B07451E.8020907@emailrob.com>
next in thread | previous in thread | raw e-mail | index | archive | help
spellberg_robert <emailrob@emailrob.com> writes: > Person, Roderick <personrp@UPMC.EDU> writes: > > You could get an LCD monitor that only has the 15 pin connection, > > then you can choose refresh rate and play with modelines. At least > > on the Viewsonic LCD I have which is 5 years old I had to do that to > > get it working. That is if you really want to keep doing such > > things. > it isn't that i --want-- to keep doing this; it is that i --can-- do > so, if i desire. 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. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?866393vekq.fsf>