Target Display Mode not working 2020 MacBook Pro (Catalina)

Dear Grant,

If the feature is officially removed, why is it not Written anywhere since I bought a new one for almost €4k?

Tell me please a good reason for this? Beyond making millions of old imacs going to the bin as they are now becoming useless as just displays.

(but yes my Mac delivered feb 20 should have been delivered sooner, but was 8 weeks delayed due to Covid In China. The model was probably indeed a 2019 model! You may be right!).

But this still does not provide me a reply to the previous point! And even though you are vehemently defending the issue, I really cant find any good motivation for it beyond a pure mercantile one.

You can connect any of these older iMac models to another Mac from 2019 or earlier for use as an external display. Learn how to identify your iMac model.

from:

Use your iMac as a display with target display mode - Apple Support

.

Dear Grant,

Since you seem well aware, and at least a lot more than the apple support online people in France (who with I spent ages on call and noone told me before I found this thread). Then maybe you will know the answer to my next problem then:

Since my iMac cannot be used as TDM, forget it... I then yesterday bought an Apple 27" Thunderbolt 2 LCD display (second hand).

And it does the same: it works fine on an MPB 2012, 2016, but not on my brand new MBP 2020.

Apple support online spent 1h44 min with me yesterday. And they offered to call me back today. If it's not compatible this time it's not written anywhere. And so they confirmed.

If I also look in my MBP2020 in apple/About/Support/SPecs.... video support, then after all the trendy 6k and 5k, it also reads:

• "VGA, HDMI, DVI, and Thunderbolt 2 output supported using adapters (sold separately)"

So this is supposed to work fine isn't it? Of course I repeat the screen works fine on older MBP and not on the most recent one. I use only apple adapters.

So this one is good for the bin as well then? Why is it not written anywhere?

Or is it again that there was not enough room in the ROM in a laptop that costs $4k...

Your new 2020 MacBook Pro does not have a thunderBolt-2 port. are you using an adapter? which one?

What identifier is shown on the 27-in display you bought? I ask because there are TWO identical-looking Aluminum-frame 27in displays -- one is Mini DisplayPort and the other Is Thunderbolt-2, and if you got the Mini DisplayPort version, it would behave EXACTLY as you describe.

Did the customer support tell anything on if this would work with a newer iMac? I have a new MacBook Pro 2020 but an 2012 iMac and am facing the same problem.

Apple makes no promise to read the items posted on these User-to-User support forums. But they DO read items posted here:

Product Feedback - Apple

Don't be too wordy, there's a limit.

The last supported iMac was made in 2014 -- that was a while ago.

Faster better cheaper displays HD 1920 by 1080 and above are readily available and you can also use an HD TV set.

EXACTLY what adapters and cables are you using?