Comments on: MacBook Pro: Black screen or ‘snow’ over DVI into switchers http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/ Notes on presentation graphics and vision systems Mon, 12 Dec 2011 12:46:30 +0000 hourly 1 http://wordpress.org/?v=3.3 By: erica http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-11555 erica Wed, 27 Jul 2011 13:13:14 +0000 http://www.serialdigital.com/?p=239#comment-11555 <blockquote cite="#commentbody-8824"> <strong><a href="#comment-8824" rel="nofollow">Rob Duncan</a> :</strong> Thanks for the succinct summary of what’s happening. I have a question about the Geffen EDID locker mention in post #3. When outputting a TripleHead2Go unit from a MacPro into a (Magenta Research) Cat5 transmitter, the TripleHead won’t always recognize the transmitter as a destination, and does not correctly output signal. Would this Gefen box help lock the TripleHead into a consistent state? I currently have to patch each output into a real monitor, have it sync, then hot-patch into the Magenta… not a show-safe or elegant solution. </blockquote> The DVI Detective should help with the TH2G issue Rob. The tripleHead is probably looking for an EDID signal telling it what resolutions and refresh rates it can send. As an EDID emulator, the DVI Detective will help your tripleHead think there is a monitor or device attached by supplying the EDID information that is may be looking for. Another elegant solution is a DVI Parrot. It is also an EDID emulator that doesn't require an external power supply and can be programmed with any resolution to trick your tripleHead to thinking there is something on the output.

Rob Duncan :
Thanks for the succinct summary of what’s happening.
I have a question about the Geffen EDID locker mention in post #3. When outputting a TripleHead2Go unit from a MacPro into a (Magenta Research) Cat5 transmitter, the TripleHead won’t always recognize the transmitter as a destination, and does not correctly output signal.
Would this Gefen box help lock the TripleHead into a consistent state? I currently have to patch each output into a real monitor, have it sync, then hot-patch into the Magenta… not a show-safe or elegant solution.

The DVI Detective should help with the TH2G issue Rob. The tripleHead is probably looking for an EDID signal telling it what resolutions and refresh rates it can send. As an EDID emulator, the DVI Detective will help your tripleHead think there is a monitor or device attached by supplying the EDID information that is may be looking for.

Another elegant solution is a DVI Parrot. It is also an EDID emulator that doesn’t require an external power supply and can be programmed with any resolution to trick your tripleHead to thinking there is something on the output.

]]> By: Nathan Self http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-11493 Nathan Self Fri, 22 Jul 2011 13:15:16 +0000 http://www.serialdigital.com/?p=239#comment-11493 I am working with the TVOne scaler760 and I had the same issues, I went into the scaler using CorioTools and turned off HDCP, saved the settings, then did a hard reboot. Worked fine... I am working with the TVOne scaler760 and I had the same issues, I went into the scaler using CorioTools and turned off HDCP, saved the settings, then did a hard reboot. Worked fine…

]]> By: Tom http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-11042 Tom Thu, 16 Jun 2011 16:55:06 +0000 http://www.serialdigital.com/?p=239#comment-11042 Just ran into this yesterday using an Extron HDCP compliant router and Screen-PRO II units. Running into an Image PRO HD first is a very expensive solution, and you would have to take the scaled out, not the loop out. If you plug an HDCP monitor into the looped out you have the same problem. Also, when the MAC saw the Image PRO HD first it wouldn't allow a 1920 x 1080 resolution, only 720p. The DVI detective is the best route. Those things can really be helpful. Just ran into this yesterday using an Extron HDCP compliant router and Screen-PRO II units. Running into an Image PRO HD first is a very expensive solution, and you would have to take the scaled out, not the loop out. If you plug an HDCP monitor into the looped out you have the same problem. Also, when the MAC saw the Image PRO HD first it wouldn’t allow a 1920 x 1080 resolution, only 720p. The DVI detective is the best route. Those things can really be helpful.

]]> By: Curtis Matthew http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-10853 Curtis Matthew Fri, 27 May 2011 11:44:24 +0000 http://www.serialdigital.com/?p=239#comment-10853 I am not familiar with term but I think it has something to do with my computer. I had found also some links that related to that issued. But because of your post, I got a little bit idea about it. Curtis Matthew Webmaster, mentalismsecretsrevealed.com "<a href="http://www.mentalismsecretsrevealed.com" rel="nofollow">mentalism </a>" I am not familiar with term but I think it has something to do with my computer. I had found also some links that related to that issued. But because of your post, I got a little bit idea about it.

Curtis Matthew
Webmaster, mentalismsecretsrevealed.com
“mentalism
“

]]> By: David M. Cotter http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-9829 David M. Cotter Mon, 21 Feb 2011 19:45:32 +0000 http://www.serialdigital.com/?p=239#comment-9829 I got the HDFuryII and it works awesomely. I can now plug my modern mac into my component HDTV at 1080i :) I got the HDFuryII and it works awesomely. I can now plug my modern mac into my component HDTV at 1080i :)

]]> By: Josh Lewis http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-8969 Josh Lewis Wed, 05 Jan 2011 20:40:15 +0000 http://www.serialdigital.com/?p=239#comment-8969 I have seen a few mentions over at creativecow.net that seem to point to the HD Fury. It will convert HDCP encoded HDMI to VGA (or 5-wire RGBHV). I have not tried this product. Josh I have seen a few mentions over at creativecow.net that seem to point to the HD Fury. It will convert HDCP encoded HDMI to VGA (or 5-wire RGBHV). I have not tried this product.

Josh

]]> By: David M. Cotter http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-8868 David M. Cotter Wed, 22 Dec 2010 07:01:38 +0000 http://www.serialdigital.com/?p=239#comment-8868 hello? hello?

]]> By: David M. Cotter http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-8841 David M. Cotter Fri, 17 Dec 2010 22:39:07 +0000 http://www.serialdigital.com/?p=239#comment-8841 the original "work around" was "connect the Mac to an ImagePRO", do you mean that i can then have my mac output the digial 1080i/p, (over DVI-D, which has the HDCP signal) and the ImagePRO will strip the HDCP signal, allowing me to convert said signal to analog, at full 1080i/p? or: from Andrew: "run the signal from the MacbookPro into a VGA distro amp", same question: full 1080i/p? does this "vga distro amp" have a digital input, like DVI-D or HDMI? and it strips the HDCP? or: from Nicolas: "it will disable the HDCP right at the source", does that mean the only signal allowed thru is 720i/p? or: from Nick: "using a cheapo dvi over utp (non-hdcp) does the trick" again do you mean no 1080 is allowed? My point is: i have a digital signal (DVI-D or HDMI) from my mac, and my TV only accepts analog component. can anyone do this conversion or have i been squeezed out? the original “work around” was “connect the Mac to an ImagePRO”, do you mean that i can then have my mac output the digial 1080i/p, (over DVI-D, which has the HDCP signal) and the ImagePRO will strip the HDCP signal, allowing me to convert said signal to analog, at full 1080i/p?

or: from Andrew: “run the signal from the MacbookPro into a VGA distro amp”, same question: full 1080i/p? does this “vga distro amp” have a digital input, like DVI-D or HDMI? and it strips the HDCP?

or: from Nicolas: “it will disable the HDCP right at the source”, does that mean the only signal allowed thru is 720i/p?

or: from Nick: “using a cheapo dvi over utp (non-hdcp) does the trick” again do you mean no 1080 is allowed?

My point is: i have a digital signal (DVI-D or HDMI) from my mac, and my TV only accepts analog component. can anyone do this conversion or have i been squeezed out?

]]> By: Freaky People Productions » Blog Archive » Mac DisplayPort won’t output to some switchers http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-8825 Freaky People Productions » Blog Archive » Mac DisplayPort won’t output to some switchers Wed, 15 Dec 2010 19:13:30 +0000 http://www.serialdigital.com/?p=239#comment-8825 [...] I stumbled upon Steve Wylie’s blog Serial Digital. Not only does it explain the phenomenon, but in the comments you’ll see useful workarounds [...] [...] I stumbled upon Steve Wylie’s blog Serial Digital. Not only does it explain the phenomenon, but in the comments you’ll see useful workarounds [...]

]]> By: Rob Duncan http://www.serialdigital.com/2010/02/21/macbook-pro-black-screen-or-%e2%80%98snow%e2%80%99-over-dvi-into-switchers/comment-page-1/#comment-8824 Rob Duncan Wed, 15 Dec 2010 18:57:57 +0000 http://www.serialdigital.com/?p=239#comment-8824 Thanks for the succinct summary of what's happening. I've experienced similar issues with the Analog Way iX series too, though occasionally I can use input 3 and 4 while 1 and 2 will give me a HDCP error. The Diventix will pop up a message on the laptop console telling the operator that it won't play HDCP-enabled content. I have a question about the Geffen EDID locker mention in post #3. When outputting a TripleHead2Go unit from a MacPro into a (Magenta Research) Cat5 transmitter, the TripleHead won't always recognize the transmitter as a destination, and does not correctly output signal. Would this Gefen box help lock the TripleHead into a consistent state? I currently have to patch each output into a real monitor, have it sync, then hot-patch into the Magenta... not a show-safe or elegant solution. Thanks for the succinct summary of what’s happening.

I’ve experienced similar issues with the Analog Way iX series too, though occasionally I can use input 3 and 4 while 1 and 2 will give me a HDCP error.

The Diventix will pop up a message on the laptop console telling the operator that it won’t play HDCP-enabled content.

I have a question about the Geffen EDID locker mention in post #3. When outputting a TripleHead2Go unit from a MacPro into a (Magenta Research) Cat5 transmitter, the TripleHead won’t always recognize the transmitter as a destination, and does not correctly output signal.

Would this Gefen box help lock the TripleHead into a consistent state? I currently have to patch each output into a real monitor, have it sync, then hot-patch into the Magenta… not a show-safe or elegant solution.

]]>