Parrot on a MacBook

I installed Parrot on my MacBook Pro 11.1 yesterday. Everything was working just fine until I ran apt update / upgrade. When I rebooted, it wasn’t possible to choose the highest resolution, in this case 2880 x 1800.

Now I’m stuck with pixelated icons that reminds med of Win 3.1. Anyone knows how to fix this?

I’m running Parrot Security 4.1 64 and I installed it from a USB, no multiboot.