[tracker1]

The frustration is targeted at Apple, because someone there likely made this decision... The support was likely already written, and expressly removed, because Apple makes Thunderbolt monitors. Not to mention that Apple is known for it's wide profit margin, so any cost/benefit analysis is less meaningful in that regard.

I'm not sure where you think said frustration should be directed.

[m_mueller]

Rather than speculating on what Apple did internally, I think the real question is whether Apple advertises DisplayPort 1.2 support, since this feature is part of the DP 1.2 spec. So far I can't find anything about this on their product pages. If that's the case it's basically users demanding features that were never put into the specs of a product.

[chris_wot]

Then Apple is in trouble:

Mini DisplayPort Connector

The Mini DisplayPort Connector is a small form factor connector designed to fully support the VESA DisplayPort protocol. It is particularly useful on systems where space is at a premium, such as portable computers or to support multiple connectors on reduced height add-in cards.

https://developer.apple.com/softwarelicensing/agreements/min...

[zimpenfish]

It doesn't say which version though.

[chris_wot]

Mini DisplayPort started from 1.2 of the DisplayPort standard.