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ScottishCaptain

macrumors 6502a
Original poster
Oct 4, 2008
871
475
*bangs head on desk*

I've got a 2012 Mac Mini that I've been trying to get 10.9.5 onto so I can run OS X Server headless. I recently bought a fit 4K headless dongle for the system, which works perfectly under 10.8.5 (I get accelerated VNC connections and everything, it's brilliant).

Under 10.9.5, all sorts of weird and whacky **** has started to happen. The desktop initially booted up at 4K resolution (as it did under 10.8), but a good portion of the graphics are completely garbled. The Display preferences panel seems crippled beyond belief, there's only 4 resolutions listed (out of 20 or so under 10.8) and the refresh rate control is disabled. Two of the resolutions fail to work outright- causing any Screen Sharing sessions to go completely black or partially black (but impossible to interact with). The other two are either too big (4K resolution) or too small (1280x720). I've tried alt-clicking on the "Scaled" option as someone suggested this would "reveal" more resolutions (why is Apple hiding them in the first goddam place?), but this doesn't seem to work.

It's not the computer and it's not the hardware dongle. Everything works perfectly fine under 10.8 (in any resolution, up to and including 4K). Windows 7 was more then happy to boot and recognize the attached monitor dongle, even though it's not required for RDP connections. 10.9 just seems like a complete and utter train wreck though, to the point that I can't actually use the system headlessly unless I unplug the monitor dongle but then GPU acceleration goes away so Screen Sharing is painfully slow.

What gives? Is there some way around this? Or has Apple software just declined to the point that rubbish like this should be expected?

-SC
 
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