DisplayLink has, at the time of my writing, had well over the [mumble...carry the seven...mumble]
three hundred seventy five business days, since Mavericks rolled out, to address this matter.
We are to believe this is a bug that is part of Mac OS X, but only affects one of the several vendors that use DL's chosen route of using "standard Apple interfaces to integrate into OS X to add additional USB graphics displays"? With the way things have gone, I guess the time to write your own,
functional hardware interface driver and roll out plan B to your proven customers, was quite some time ago.
[I would confidently 'call BS' on DL claims that the ball is not in their court,
but even if those claims are all true]
• the management decision to abandon existing customers to wait for a disinterested mega-corporation, combined with
• the engineers' decision to wait and wait and wait for Apple's vaporware patch with no in-house backup plan
was obviously the wrong path. Analysis and strategy aside, there's one takeaway I'd like to emphasize:
You are losing customers.
If you, my oddly-patient reader, are an employee at DL—I implore you to pass that message up the chain. We have money, we are paying attention, and we are jumping ship. Anecdotally for one, I have to give up on the company; in the sense of my considerable presently-installed hardware investments being decommissioned, with regard to my company's future purchases, and as far as my recommendations to others as their designated "tech guy I know who will tell me what to buy".