You know, maybe you're missing a chipset/usb port driver? Having the controllers work on the Mac with a Windows partition is, well good!
You're right though, it's an enigma and probably won't be fixed anytime soon, really sorry about that.
Sorry for necroing, but did you ever get it to work? And if, how? I have the exact same problem. Plug it in, orange flash and then nothing. Tried everything in this thread, and it's still not working. It has happened once before, and after uninstalling and installing drivers a thousand times, restarting my computer a million times, and resetting the controller twice as many times, it suddenly worked. I have no idea why it suddenly worked, though. It just seemed random.
Both times the controller stopped working was after the power suddenly went out. As in there was no power through the outlets.
I'm sure the controller and the USB-ports work, though, as I've connected the controller to my tablet, and the USB ports works with other devices. I have no PS4 and no other devices should interfere with the DS4.
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CPU : I7 2600K Oc'ed @ 4.2Ghz
Mobo : Intel P67 southbridge
GPU : NVIDIA Geforce GTX 750 Ti
RAM : 6 Go