[Bug 108781] 4.19 Regression - Hawaii (R9 390) boot failure - Invalid PCC GPIO / invalid powerlevel state / Fatal error during GPU init

https://bugs.freedesktop.org/show_bug.cgi?id=108781

--- Comment #28 from Linnea S linnea.skogtvedt@gmail.com --- (In reply to freedesktop from comment #27)

OK there seems to be something screwy going on with the amdgpu.dpm option - if that's set to 0, it still results in a blank screen. It has to be removed entirely from the kernel command line for boot to work for me on 4.19.

I'm not sure if that's a different bug or not, but can anyone who had success with removing the option, also test with amdgpu.dpm=0 to see if it still results in a blank screen?

Also, are FD BZ email notifications broken for anyone else?

I'm seeing the same thing. amdgpu.dpm=0 causes a blank screen, leaving it out enables the system to boot.