I just installed ubuntu on my computer and I'm having a lot of trouble getting the graphics to work. Only one display is detected, and it is shown as unknown and I'm not able to change resolution.

When I go to the about page in settings, the graphics are shown as llvmpipe (LLVM 11.0.0, 256 bits), which I'm pretty sure is wrong as I have an rx 6800. I've been using windows my entire life, but finally decided to give linux a go, but I just can't figure it out.

There is a lot of threads mentioning llvmpipe (LLVM 11.0.0, 256 bits), but I'm brand new to ubuntu (just installed it today) so I have almost no idea what anyone is talking about. I tried following what some people said, but I'm afraid that I will/ already have made it worse.

I would provide more info, but I have no idea what info I should provide. If anyone has any idea how to help, it's greatly appreciated!