https://bugs.freedesktop.org/show_bug.cgi?id=109298
--- Comment #1 from Michel Dänzer michel@daenzer.net --- (In reply to tkdestroyer2+bugs-freedesktop from comment #0)
I have an MSI R9 390, one of the bugged ones. I can boot successfully using cik_support=1 dpm=1 and dc=1.
Does not specifying the dpm parameter at all on the kernel command line or anywhere else make a difference?
Please attach a screenshot, the Xorg log file and the output of dmesg corresponding to the problem.