https://bugs.freedesktop.org/show_bug.cgi?id=100666
--- Comment #8 from Luke McKee hojuruku@gmail.com --- Yeah I documented the workaround too: https://forum-en.msi.com/index.php?topic=298468.0
Root cause may be able to how amdgpu handles not being able to read it's powerplay settings because motherboard bioses (old AMI) don't set up MMIO BARs properly and intel submitted a patch to enforce restrictions on memory address regions in UEFI.