underscan needs to reset every time I turn on my computer
Mac mini (Late 2012) 2.3 Ghz I7 with Mac OS High Sierra 10.13.2 after last upgrade my green / pink movie problem was solved, but now when I turn on my system I have to reset the Underscan so my display will fit on my screen. This problem started after the update to High Sierra . Any suggestions on how to correct this issue so my system can work normally?
Mac mini (Late 2012), macOS Sierra (10.12.1)