No, I agree it's totally fucked up and unsatisfactory. I'm just trying to understand what the real issues are, since Adobe seems to be not forthcoming with working solutions. This is a very serious issue that affects many professional users, and hurts their reputation and they are left dangling by Adobe (or the printer driver programmers if they have to make a followup move as well). This should be fixed without hesitation, and not left to users to analyze (although their reports can help).
Cheers,
Bart
Well, in a nutshell, yes. However it is a holiday weekend so I'm prepared to cut them some slack for a few days - IF they get serious about finding out what is REALLY going on.
What makes printer drivers an implausible cause is the sequence of events, which I think I have correctly here:
(1) Some time ago Apple released El Capitan. I presume that release included the new code that several of those Adobe posts mentions. I upgraded to El Capitan and there were NO issues with printing, or any other aspect of colour management.
(2) Some time after that, Epson issued an updated set of drivers for various current models primarily to include the new Legacy papers. There was, if I remember correctly also a firmware upgrade for the P800. I installed all of that. Still NO issues with printing or any other aspect of colour management.
Since then there have been no further updates of either Apple or Epson software or firmware for the P800 and SP4900 printers.
(3) A few days ago I upgraded to the latest versions of LR and PS, and lo and behold, my colour-managed print flow got whacked. And I know this statistically because I am doing research on the relationship between the accuracy of colour rendition on paper versus visual perception with reference files having known, repeatable colour values, so everything I'm doing is being measured with an i1Pro 2 spectro and i1 Profiler - i.e. high-end colour management gear, with great attention being paid to the "M" factor and all the rest of it.
Therefore, the logical, and very strong inference to be drawn from this sequence of events is that item (3) is the culprit. Now, if I were Chief Inspecteur Clousseau of the Surete Nationale and knew how to unearth obscure smoking guns causing simultaneous damage under the hood, perhaps I would have by now stumbled on parallel or hidden causality, but somehow I think the probability is low enough to dismiss any such thing out of hand. Remember when the dog bit and he said "so sorry, but it's not my dog". Speaking of which, keep up the good work Andrew - the time you are committing to this will pay off sooner or later! I think sometime after the weekend there should be traction.