Greetings

Managed to get the new system running - - - yee haw!!!
Now trying to get everything set up - - - lots of software to install
- - - working on things.

How do I get the open source drivers for my RX570 gpu installed AND working?

lsmod says that I have amdgpu running - - - multiple instances.
I can't figure out how to change my monitor settings from some 1080 x
768 to the actual resolution of 3840x2160.
This graphics stuff has always seemed to be linux's achilles heel!!

TIA for any assistance

(Please mr Steve- - - !)