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Keblar

macrumors member
Original poster
Oct 5, 2019
66
22
Santiago, Chile
Hi guys,

I'm writing because i've run out of ideas for a solution to my problem. I installed macOS Catalina GM on a second partition on my Mac mini two days ago. And now I cannot boot in 4K at 60hz with my 4K Samsung display. Only way is to do the NVRAM reset. It boots ok if I change the resolution to 60 hz later after booting in 30hz, but its a pain to have to manually change it every single time. It used to work fine before Catalina. Please help! Suggestions!
 
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