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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #18 from freedesktop at nuclearsunshine.com ---
I just hit this as well with 4.19 on Fedora and a R9 390X - Grub shows fine,
then no video output after that (monitor goes into power save), and boot
doesn't seem to continue (no disk activity etc.)

I removed amdgpu.dpm=1 from my kernel params and was able to boot with 4.19.x -
I noticed that everyone who mentions kernel params on this bug has this param
present too - try without it?

This is a regression vs. 4.18.x - with that kernel series I was able to boot
with amdgpu.dpm=1 without issue.

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