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ScreenSavers

macrumors 68020
Original poster
Feb 26, 2016
2,062
1,576
Bloomingdale, GA
Mac Pro 5,1.
I have 2 30" Apple Cinema displays, which work great with my Radeon R9 M270, because it has 2 dual link DVI ports.
I just got an RX 580, and one display works fine with the built in DVI port, but I can't get the second one working. I bought an active DisplayPort to Dual link DVI adapter from Amazon, and it works for about 2 seconds and then the video gets jumbled up on the second display.
I have gone back to using the old R9, but I want to use the RX580. What's the problem here?
 

FlorisVN

macrumors 6502a
Nov 8, 2013
966
373
Mac Pro 5,1.
I have 2 30" Apple Cinema displays, which work great with my Radeon R9 M270, because it has 2 dual link DVI ports.
I just got an RX 580, and one display works fine with the built in DVI port, but I can't get the second one working. I bought an active DisplayPort to Dual link DVI adapter from Amazon, and it works for about 2 seconds and then the video gets jumbled up on the second display.
I have gone back to using the old R9, but I want to use the RX580. What's the problem here?

this adapter also works bad with both monitors ??
I guess or perhaps adapter is broken or nit compatible with apple 30” cinema display’s.

i use on my 5,1 with a gtx680 and one 30” is connected using an origina apple dual link dvi display adapter without any problems so far..
 
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ScreenSavers

macrumors 68020
Original poster
Feb 26, 2016
2,062
1,576
Bloomingdale, GA
Is this really an active adapter (providing additional power via USB) or is it just claiming to be “active“? None of the later ones will work.

It is an active adapter with a USB plug. Both displays are good. I don’t think Apple ever made a displayport to dual link adapter, this card does not have mini display port.

Here’s the adapter.
ae3d3efe10ced44fa4c059b497da81ab.jpg

9336ff3422abf58db96ada54b0a995fc.jpg
 

g2only

macrumors newbie
Jun 25, 2015
26
21
USA
I purchased 2 of these from eBay (a deal @$25/each!) and use with my 2 30" ACD's on a Radeon VII...I get a half a second of garble when waking from sleep, but otherwise have been working flawlessly for a almost 3 months now.

BizLink BZLKS10008 (B) 330MHz USB Powered DisplayPort to DualLink DVI Adapter
https://ebay.us/ZilZuT
 
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FlorisVN

macrumors 6502a
Nov 8, 2013
966
373
It is an active adapter with a USB plug. Both displays are good. I don’t think Apple ever made a displayport to dual link adapter, this card does not have mini display port.

Here’s the adapter.
ae3d3efe10ced44fa4c059b497da81ab.jpg

9336ff3422abf58db96ada54b0a995fc.jpg

Apple did made an adapter specially for their 30" cinema display.
Ive got two of them.
It is an active adapter with a USB plug. Both displays are good. I don’t think Apple ever made a displayport to dual link adapter, this card does not have mini display port.

Here’s the adapter.
ae3d3efe10ced44fa4c059b497da81ab.jpg

9336ff3422abf58db96ada54b0a995fc.jpg


Apple sure did active made official Apple Dual Link Mini Display port adapters, specially for the 30" Cinema display.
I believe they sold it until arround 2013-2014.


 
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flyproductions

macrumors 6502a
Jan 17, 2014
938
400
It is an active adapter with a USB plug. Both displays are good. I don’t think Apple ever made a displayport to dual link adapter, this card does not have mini display port.
Yes, but for a few bucks you can get a displayport to mini-displayport adapter like this one. I'm using one of them along with the Apple adapter for a 30" ACD and it works just fine.

But the adapter you have should absolutely work too! Do you have the chance to attache an additional display to adjust the resolution to the ACD's native 2560 x 1600 after booting?
 

ScreenSavers

macrumors 68020
Original poster
Feb 26, 2016
2,062
1,576
Bloomingdale, GA
Yes, but for a few bucks you can get a displayport to mini-displayport adapter like this one. I'm using one of them along with the Apple adapter for a 30" ACD and it works just fine.

But the adapter you have should absolutely work too! Do you have the chance to attache an additional display to adjust the resolution to the ACD's native 2560 x 1600 after booting?

I tried that. I also tried with SwitchResX but it is still cutting out.
 

ScreenSavers

macrumors 68020
Original poster
Feb 26, 2016
2,062
1,576
Bloomingdale, GA
Apple did made an adapter specially for their 30" cinema display.
Ive got two of them.



Apple sure did active made official Apple Dual Link Mini Display port adapters, specially for the 30" Cinema display.
I believe they sold it until arround 2013-2014.



That is the correct adapter, and I can locate one of those, but this card does not have a mini displayport.
 

FlorisVN

macrumors 6502a
Nov 8, 2013
966
373
That is the correct adapter, and I can locate one of those, but this card does not have a mini displayport.

Going from display port to mini displayport is easy, with simple adapters..
When buying an original apple adapter, make sure you buy one with latest firmware 1,03.
Also shown in that youtube video !
 

flyproductions

macrumors 6502a
Jan 17, 2014
938
400
But your adapter should positively work! It even is explicitely advertised as a solution for the cinema HD 30.

club3d.jpg


I'd first give resetting the NVram a try. It also should appear in the "Graphics/Display"-area of system info. At least the Apple-adapter does. At the Display’s description right below the "Rotation"-entry there should be another one for "Adapter Type".

If all that does not work, it might well be defective. Can you return it?
 
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ScreenSavers

macrumors 68020
Original poster
Feb 26, 2016
2,062
1,576
Bloomingdale, GA
But your adapter should positively work! It even is explicitely advertised as a solution for the cinema HD 30.

View attachment 897079

I'd first give resetting the NVram a try. It also should appear in the "Graphics/Display"-area of system info. At least the Apple-adapter does. At the Display’s description right below the "Rotation"-entry there should be another one for "Adapter Type".

If all that does not work, it might well be defective. Can you return it?

Here it is with the adapter hooked up. Both displays are detected. This is weird - every minute or so the second screen will flash on and display for about three seconds and then turn back off. Otherwise it’s just really faint flashing bars.
fe561ad9cd53c91ab6414d106d3473f7.jpg

fb88b946e3810d18d0a379175652f6dd.jpg

6df2b1799f396b30611f2a61eff805f3.jpg
 

phairphan

macrumors 6502a
Sep 21, 2005
603
221
Reject Beach
Those Apple adaptors (and these sorts of adaptors in general) had horrible reviews. I'm not sure I'd invest a lot of time and money tracking one down. The adaptor you have should work.

Which 580 do you have installed? I recall that the ports on some cards, like some XFX models, can behave a bit squirrelly. I presume you've tried the other DP outputs on the card if it has them?
 

flyproductions

macrumors 6502a
Jan 17, 2014
938
400
Here it is with the adapter hooked up. Both displays are detected. This is weird - every minute or so the second screen will flash on and display for about three seconds and then turn back off.
This is what i get to see:

Screen Shot 2020-03-03 at 00.11.10.png

Similar but with the Adapter Type in addition. But maybe this is just for the Apple adapter and at least your adapter's firmware is recognized.

Have you tried all the display ports available on your card? If your answer is "yes" and you had the same symptoms for all of them, i'd bet it's just your adapter beeing fu**ed. So if you can RMA it, this is what i would do next. If not, :mad:

But i can absolutely not share phairphan’s opinion. In my case the adapter works flawlessly with no noticeable difference to a real dual-link DVI at all.
 
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ScreenSavers

macrumors 68020
Original poster
Feb 26, 2016
2,062
1,576
Bloomingdale, GA
My card is a Sapphire Pulse Radeon RX580 8GB. I’ve tried both displayports and I tried the adapter on the DisplayPort of my R9. Same result.
 

bjar

macrumors regular
Feb 20, 2013
232
103
Sugar land, tx
I have that same 3D club adapter and it is crap. It seemed to work with one 30in and a 5600xt but there were a lot of lines on the screen, bad picture. I bought a used dell adapter off eBay and it works perfectly.
 

phairphan

macrumors 6502a
Sep 21, 2005
603
221
Reject Beach
My card is a Sapphire Pulse Radeon RX580 8GB. I’ve tried both displayports and I tried the adapter on the DisplayPort of my R9. Same result.

In that case, it sounds like you have a bad adaptor and it's time for a return and another/a different one. Looks like the Apple adaptor is being sold used on eBay for about the same price as the new, non-Apple adaptors.
 

flyproductions

macrumors 6502a
Jan 17, 2014
938
400
I have that same 3D club adapter and it is crap. It seemed to work with one 30in and a 5600xt but there were a lot of lines on the screen, bad picture.
So this adapter seems to be really crappy. I was close to ordering one too. Luckily i didn't and got the Apple instead.
 
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