garageCube

[vj_ava]

scan converters ain't so bad..

NOT ALL OF US ARE AS SMART AS YOU!

this was inelegant.. i'm surprised folks held back as much as they did, when you publicly expose that much of your a$$ pain. you got a pretty darn nice answer there, sailor, with some gentle chiding, and you kinda flipped.

i think we all need a vacation. get some sleep and eat some decent food for once!

Given it was said that the display ports carry no analog signal there was no a whole bunch of accurate info coming from all sides. I still think it is possible to daisy chain and I want to try to see if it works. The display port does have the capabilities to out put analog signal. Apple could build a display port adaptor to composite if they wanted too.

There are I am sure other options to look at too.

[sigmasix]

Wikipedia might be your friend about displayport and mini displayport…

Also check the DVI definition, you'll understand that there are many different DVI connectors and only one accepts to transmit a analog video signal that can be directly converted to composite and s-video…

The mini displayport to dvi adapters around here does not carry any analog video… So the dvi to composite / s-video adapter from apple won't work…

But if you really want to see it by yourself, please, give us your feedback, who knows, maybe it might work?!?

[EDIT]
I'm not even sure the new graphic cards inside all mini displayport equipped macs support analog video signal… Don't be afraid to read the posts from createdigitalmotion, it's a really serious blog with complete informations about it

[vjjustinallen]

So I have been doing some research into the Matrox units and they (Matrox) have now taken the new (mid 2009) Macbook Pros off of their compatibility list. It seems that there is an issue with the output using the Apple branded Mini DisplayPort to VGA adapter. It seems to limit the resolution output.

I looked into the other 2 companies making adapters for the Mini DisplayPort and Monoprice was one of them. I sent them some questions and received some answers (see below).

The good news is that they say their Mini DisplayPort to VGA adapter does not have this issue. The bad news is that they have no plans to make a Mini DisplayPort to S-Video adapter. As they are one of the major manufactures for after-market cables this does not bode well for those of us looking for component/composite output without adapters.

Just FYI

My Questions:

I have 2 questions both dealing with the latest (mid 2009) Apple Macbook Pro Mini DisplayPorts

1) There are reports that when using the Matrox Triplehead2go that the Apple minidisplayport to VGA adapter does not allow full resolution. Matrox states that this has to do with the way Apple made their converter.

Does yours have the same issues?

2) Do you have plans for a Mini displayport to S-video adapter?

Thank you for your time



Their Answers:

Hello Mr. Allen

In regards to your question, what were they considering to be full resolution because our mini dp to vga adpater has had no trouble displaying 1080p and vga is known to go beyond that as well. It can also vary per the source itself and the display is able to accept. Unfortunately not at this time we are going to be carrying a mini display port to s video, I do apologize for any inconvenience.

Should you have any further questions, please feel free to email us.

We appreciate your business.

Sincerely,

MONOPRICE, INC
www.monoprice.com
9477 London Way,
Rancho Cucamonga, CA 91730
______________________________

[sigmasix]

For the TripleHead <-> mini displayport trouble, Matrox just released doubleHead and tripleHeat that can be plugged with displayport. I don't know if it's really better as apple doesn't provide mini displayport to displayport adapters… anyway, if you find one you might avoid the vga adapter problem.

[vjjustinallen]

Apple has also just released a firmware upgrade for their mini DisplayPort to VGA adapters.

[vjjustinallen]

The matrox does come with some adapters, for an extra fee

http://www.matrox.com/graphics/en/produ ... guide.html

http://www.matrox.com/graphics/en/produ ... grades.php

[jackdaniel]

I always get those adapters/converter from ecyclog. Good price and free shipping.

http://www.ecyclog.com/category.php?id_category=67