I'm having this issue also, please refer to the following thread for more details if you're interested.Hi,
When I start my Mac Pro (2013), first screen with apple logo is pink (see attached screen). I've tried Reset NVRAM but without success. Any ideas?
I can't find it now, but in another thread someone mentioned that it is a known Sierra bug and will be fixed in an update.I made decision the re-install Sierra OS. So, initial screen with apple logo is pink as usual and after then installer is starting up, it's changing to the "normal" colors ?!?
Still the same
That is some good news I guess, I personally don't have a thunderbolt display and rely on the HDMI connection of the Mac Pro to my external Asus monitor. I have tried a thunderbolt to HDMI adaptor going from the Mac Pro to the HDMI input on my monitor but the issue with the startup screen is still there.Still the same
[doublepost=1479942513][/doublepost]I've plugged my Mac via Thundebold cable to TB Display and everything looks normal.....
It seems that only HDMI output is impacted by this problem
I also have the Mac Pro MD878B/A (Late 2013), did you manage to solve this issue? I updated to the 10.12.2 Beta 6 a few hours ago hoping that it would solve it but the issue is still there.I had this recently over the HDMI port connected to a 43" 4K.
That's the only issue I've noticed so far other than this screen also only working at 30Hz when on another computer this cable and screen worked at 60Hz.
I have a new HDMI cable and MiniDP - HDMI cable coming in early next week to try and see if any of this resolves.
My MP is a 6c D500 machine on 10.12.2b
That's my feeling also! I'm not sure how to go about this though.Take advantage of the Apple Care ASAP.
You mean that problem gone after Video Card has been replaced by Apple support? If so, how long they kept your computer?I had the same problem with my 2013 Mac Pro..Tech guy said it was the 2nd video card going out.
Since there was a "silent" repair program they put in a new one for no cost.