I din’t fix well in 15.3 and 15.2 but I tried to install tumbleweed and found that after the original installation, I installed the nvidia driver, and the job was completed.
compare 15.3/tumbleweed, I found the different in kernel ver , 5.3.18.19 vs 5.13.8-1.
And I found some discussion shows , the R9 5900HX CPU must work with kernel 5.10 up…
If want to confirm my opinion, maybe install 15.3 and then update the kernel to 5.13