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I tested it quite thoroughly two weeks ago - and it seems to be 100%. Another impression can be caused by the fact that at the first glance it is hard to tell if the Studio is sleeping or not (there is no "LED breathing) ? and the only way is to feel (or hear ?) if the fans are working...

It may be, of course, that different ACDs from different years of production behave differently...

It's unfortunate, but I think it's time to buy new monitors...
Yeah, I'm actually starting to look for a new monitor. Sadly, the blue snow effect happens on this one on a black screen. It's really irritating, and I don't know if there's a way to fix it. Hopefully there is, but I'm not holding my breath.
 
I didn't realise this would be so problematic. I have two 30" ACD and assumed it would be no problem, as it wasn't a problem with an M1 Mac mini...
 
I just got a Mac Studio and am trying to get it to run with the 30" Apple Cinema Display I have. The Mac Studio is running OS 12.4 and just gives black screen. The 30" monitor is connected by the Apple DVI to Mini display port cable adapter to the "Apple thunderbolt 2/Mini Display port adapter to USB C/Thunderbolt" adapter and the USB C end is plugged into a USB C port on the Mac Studio. I've tried all 6 ports without success. This should work but it isn't unless its because of the Apple thunderbolt 2/Mini Display port adapter to USB C/Thunderbolt. What am I missing?
You need a USB-C to Mini DisplayPort Adapter.

The Apple Thunderbolt 3 to Thunderbolt 2 Adapter is only for Thunderbolt signals. It cannot transfer DisplayPort unless it is tunnelled as Thunderbolt to a Thunderbolt device such as a dock.


I ran ScreenResX and the report says the monitor was made 'week 45 of 2004, EID 9220' -which I haven't seen that number listed in any of posts- and it says HDCP is not supported.
I've seen 9232 and 9221
https://forums.macrumors.com/threads/do-i-have-the-refreshed-2007-30-cinema-display.2330633/
Here's some EDID's for 9220:
https://github.com/linuxhw/EDID/blob/master/Digital/Apple/APP9220/
There's some minor differences.
How was the display connected when you used SwitchResX?
 
Have just ordered a Mac Studio and currently run ACD 30 + M1 MacBook Air using a USBC - DVI adapter. It works pretty well, with the odd issue that's sorted by a reconnect/restart.

I was worried about it not fitting underneath and someone in this thread has confirmed it. The old ACD30 also comes with pretty chunky cables/power supply, so these things combined are having me strongly consider the new Studio display to keep things cleaner.
 
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I've ordered a mini DisplayPort -> USB-C adapter to connect to my dual link DVI -> Mini DisplayPort adapter. I'm going to try going that route instead of the dual link DVI -> USB-C adapter to see if I can eliminate the snow effect on the screen. Hopefully this works and I can avoid having to get a new monitor. I'll report back to let you guys know if this works.
 
I've ordered a mini DisplayPort -> USB-C adapter to connect to my dual link DVI -> Mini DisplayPort adapter. I'm going to try going that route instead of the dual link DVI -> USB-C adapter to see if I can eliminate the snow effect on the screen. Hopefully this works and I can avoid having to get a new monitor. I'll report back to let you guys know if this works.
So I got the adapter in and connected it up. The monitor now looks perfect again. The USB-C -> Dual link DVI adapter doesn't work quite right. If anyone has an issue, just connect up the old MDP -> Dual Link DVI adapter and get an MDP -> USB-C adapter to go with it, and everything works.

That was a frustrating time!
 
Any UK folk ordered something that works with a 30" ACD, that you can recommend? I linked to a product above, but I haven't actually tried it.
 
I just checked and have a 2008 and a 2009 30" ACD. Both have HDCP supported and are 0x9221 in system prefs.

What's funny is that one of the screens has yellowed massively and requires running at 100% brightness after calibration. The other one is still quite 'white' and is therefore run at 50% brightness after calibration (for them to both match).

Anyway, I suppose this means I can use two of these, linked earlier: https://www.amazon.co.uk/Adapter-CableCreation-Active-Resolution-Converter/dp/B085HH1LQW/ref=sr_1_3?crid=3IXTGTXO49Y37&keywords=dual+link+thunderbolt+to+usb+c&qid=1653481625&sprefix=dual+link+thunderbolt+to+usbc,aps,57&sr=8-3

£64 to get my old monitors working doesn't fill me with joy to be honest!

I do have 2x of the official Apple dual link DVI to MDP/thunderbolt adaptors, but I suppose this means that I won't need to use them... maybe I can sell them.
 
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If I already have 2x official Apple Mini DisplayPort to Dual-Link DVI Adapters, why can't I use one of these: https://www.amazon.co.uk/Sicotool-DisplayPort-Adapter-Compatible-MacBook/dp/B08B647L2X/ref=sr_1_3?keywords=mini+displayport+to+usb+c&qid=1653481886&sprefix=minidisplayport+,aps,61&sr=8-3

It specifically mentions 30" ACD and dual link...

Reviews seem good so I'll probably go with two of them to save money. I actually already have something similar from Benfei that was given to me, but I don't have my Studio yet to test it. Pretty sure a family member was using it with 30" ACD and M1 Mac Mini, though. It looks like this, but with BENFEI written on it: https://www.amazon.co.uk/Displaypor...1653482345&sprefix=minidisplay,aps,57&sr=8-10
 
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If I already have 2x official Apple Mini DisplayPort to Dual-Link DVI Adapters, why can't I use one of these: https://www.amazon.co.uk/Sicotool-DisplayPort-Adapter-Compatible-MacBook/dp/B08B647L2X/ref=sr_1_3?keywords=mini+displayport+to+usb+c&qid=1653481886&sprefix=minidisplayport+,aps,61&sr=8-3

It specifically mentions 30" ACD and dual link...

Reviews seem good so I'll probably go with two of them to save money. I actually already have something similar from Benfei that was given to me, but I don't have my Studio yet to test it. Pretty sure a family member was using it with 30" ACD and M1 Mac Mini, though. It looks like this, but with BENFEI written on it: https://www.amazon.co.uk/Displaypor...1653482345&sprefix=minidisplay,aps,57&sr=8-10
That would probably be the best option - to use the Apple adapters you already have, since the more convenient (less connectors) USB-C to dual-link adapters have issues with static on black backgrounds.
https://insights.club-3d.com/thread...a-and-apple-cinema-display-30-on-mac-mini-m1/
 
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I have two 30" ACD's plugged into a Mac Studio Ultra via the Apple "Mini DisplayPort to Dual-Link DVI adapter" (be sure the usb-A is also plugged in as it needs power if your adapter does not have a usb-A connector also you do not have the dual-link version and need it) and then to a Mini-DP to USB-C adapter. I noticed only 1 out of 3 of the type that I tried from Amazon worked. This is the one that does work-

Good luck!

Good to know, thanks
 
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If I already have 2x official Apple Mini DisplayPort to Dual-Link DVI Adapters, why can't I use one of these: https://www.amazon.co.uk/Sicotool-DisplayPort-Adapter-Compatible-MacBook/dp/B08B647L2X/ref=sr_1_3?keywords=mini+displayport+to+usb+c&qid=1653481886&sprefix=minidisplayport+,aps,61&sr=8-3

It specifically mentions 30" ACD and dual link...

Reviews seem good so I'll probably go with two of them to save money. I actually already have something similar from Benfei that was given to me, but I don't have my Studio yet to test it. Pretty sure a family member was using it with 30" ACD and M1 Mac Mini, though. It looks like this, but with BENFEI written on it: https://www.amazon.co.uk/Displayport-Adapter-Converter-Compatible-Projector-Gray/dp/B096SCFSRW/ref=sr_1_10?keywords=minidisplay+port+to+usb-c+adaptor&qid=1653482345&sprefix=minidisplay,aps,57&sr=8-10

Hi all,

Just to confirm that the adaptors in the first link above do NOT work. I bought two of them and didn't look at the seller, which is not Amazon direct, so they probably won't accept a return for one of them. Luckily I only opened one so I can at least get a few £ back on returning that one. It does specifically list the 30" ACD, but, nothing.

My old/spare BENFEI adaptor does work, however.

The bad news is that I cannot find another in stock anywhere. So I'm going to have to take a gamble on another adaptor, unless I can find one.

I'm also getting problems with brightness controls - in Monterey you lose brightness controls with older ACDs and defaults to about 30-50% brightness.

I am trying to use the MonitorControl app to get around this, but it automatically makes the brightness about 50% - even when the brightness is up to 100% using the app. The only way I can get the brightness back up is with the touch/hardware control on the ACD. When I use the MonitorControl app, it jumps the brightness down immediately.

So, so far it's not going great with my 2x 30" ACDs!

Cheers,

Ed

Update: 50% brightness issue with MonitorControl is fixed by following the instructions in post #4: https://github.com/MonitorControl/MonitorControl/issues/881
 
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As an update on the cheap adaptors for anybody in the UK trying to use a 30" ACD - it's clear that the MDP 'male' end (gross) does not fit into the adaptor fully - you cannot push it in far enough and it doesn't feel secure.

I really, really forced it in and managed to get it to display an image, but only at 1280x800. I tried all the resolution options ('see all resolutions', pressing 'alt'/option as you click 'scaled'), but I couldn't get it to display full resolution 2650x1600. I don't think there is 'enough' of a connection there.

I did have a second one to try, but didn't want to open it in case the Amazon reseller got 'funny' with me. I kicked off the returns process.
 
Another day, another failed attempt to connect my second ACD 30" to a Mac Studio.

Despite looking externally just like the working BENFEI adaptor I have, this adaptor failed: https://www.amazon.co.uk/gp/product/B072KRZ4SZ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I purchased it instead of the eBay one as it was available next day...

There are a couple of other options left on Amazon, a little more expensive, but at least it’s next day: https://www.amazon.co.uk/dp/B077G5W...pY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU&th=1

But I’ve ordered the cheap ebay one next…
 
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Another day, another failed attempt to connect my second ACD 30" to a Mac Studio.

Despite looking externally just like the working BENFEI adaptor I have, this adaptor failed: https://www.amazon.co.uk/gp/product/B072KRZ4SZ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I purchased it instead of the eBay one as it was available next day...

There are a couple of other options left on Amazon, a little more expensive, but at least it’s next day: https://www.amazon.co.uk/dp/B077G5W...pY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU&th=1

But I’ve ordered the cheap ebay one next…
I don't see how it's possible for all these adapters to fail. Are you connecting them to a Thunderbolt port of the Mac Studio's rear? The Apple Mini DisplayPort to Dual Link DVI adapter also requires a USB type A connection to any USB port.
 
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Check some of the reviews then. This is a known issue documented across forums. Only some, specific adaptors work, and they seem to go out of stock.

I have one older, working BENFEI adaptor which is not for sale anymore.

I have only tried two other adaptors so far. I have an ultra so all ports are the same.
 
This has been discussed extensively. There are adapters that work. The one I use is made specifically for ACD's and is on Amazon. The key seems to be "HDCP off". BTW my ACD native res is 2160 x 1600, which is what I am getting. My ACD is 30" and dates back to 2008.

Club 3D CAC-1510-A USB C to Dual Link DVI-D Adapter HDCP Off for Apple Cinema Displays, 3840x2160@30hz, 2560x1600@60Hz​

 
This has been discussed extensively. There are adapters that work. The one I use is made specifically for ACD's and is on Amazon. The key seems to be "HDCP off". BTW my ACD native res is 2160 x 1600, which is what I am getting. My ACD is 30" and dates back to 2008.

Club 3D CAC-1510-A USB C to Dual Link DVI-D Adapter HDCP Off for Apple Cinema Displays, 3840x2160@30hz, 2560x1600@60Hz​

The Apple Adapter is preferred because it doesn't have the static problem of the USB-C adapters.
https://insights.club-3d.com/thread...a-and-apple-cinema-display-30-on-mac-mini-m1/
but @Sharky II is having an issue finding a Mini DisplayPort adapter. Maybe the adapters would work if they were connected to a Thunderbolt hub or dock?
 
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