Re:Apple limits daisychaining of non-Apple displays in OS X
by Moto7451 on Sunday June 07, 2015 @10:16AM
(#9674684)
They're compliant with DP 1.1. The DP association doesn't require 1.2 be supported, although Apple really ought to. There's really not that much substance to the OP's hand waving here except for the fact that it's disappointing that there is driver support for the same hardware in Windows.
Also, there's no point in "flooding" developers with support requests. Devs will rarely read what customers write anyways in large corporations like Apple. Better to push from the standards org or the govt regulator.