4k display can only do 1600x1200 on new OC install

4k display can only do 1600x1200 on new OC install

Hi Guys! I recently made my first OpenCore install and I have one big problem. My 4k display can only do 1600x1200 pixel resolution. I tried pressing alt in the preferences but that didn't work. My gpu is r9 290 (it shows up in system profiler) and I have an iGPU as well (Intel UHD 630). My mobo is Gigabyte z490m, my cpu is i7 10700k.

Do you have any suggestions what could be the cause of this problem?

Or any ideas about how could I solve this?

Thanks for reading my post!

https://preview.redd.it/vqn8tufelht61.jpg?width=1600&format=pjpg&auto=webp&s=0d752dc1fc9bd296038c9743fc49494150071e93

submitted by /u/juhaszmark
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