https://bugs.freedesktop.org/show_bug.cgi?id=108781
--- Comment #26 from Linnea S linnea.skogtvedt@gmail.com --- The patch from bug 108704 doesn't help for me, the system still boots to a black screen. The card is a MSI Radeon R9 390 Gaming 8G running on (patched) kernel 4.19.4-300.fc29.x86_64. The system boots if I leave out dpm=1, but I haven't tested to see if it's stable.