Original posting thread:https://forums.freebsd.org/threads/...for-freebsd-12-1-tutorial-for-beginner.73901/Thank you. The 5.0 driver allows my RX590 to work! I am only having problems now with the fan speed, as it appears the GPU fans are spinning at near full speed, creating too much noise.
A little clean-up for the instructions is needed, as there are some problems with the link. The direct download for the file is:
You will also need to download the firmware and install it.
A problem with following the instructions above, about installing drm-kmod from packages is that if you later on simply run
pkg upgrade, it will overwright the updated drivers.
Check up on this thread, you can make your card work with the data provided there.