Comment # 21
on bug 108781
from Shecks
I'd like to report that I am have been experiencing the same issue. After upgrading (Fedora 29) from kernel 4.18.18 to 4.19.2 my PC would no longer boot. I have a an MSI R9 390 GPU and have been using the the following kernel parameters successfully with previous kernels:- amdgpu.dc=1 radeon.cik_support=0 amdgpu.cik_support=1 amdgpu.dpm=1 After upgrading to kernel 4.19.2 my PC will boot to GRUB but then, as others have posted, the screen goes black (just before the Plymouth loader is displayed and the switch from text to graphics mode) and then the monitor goes into standby as no video output is detected. I have tried booting without the rhgb kernel parameter but this does not solve the issue, however as suggested by freedesktop above, I removed the amdgpu.dpm=1 kernel parameter and can now successfully boot the 4.19.2 kernel. With previous builds I found that my PC was not stable without the amdgpu.dpm=1 parameter and the GPU would crash as soon as I did anything graphics intensive (I presume this was due to the GPU power state changing) so I have run the Unigine Heaven bench mark and so far it seems to be stable (previously on kernels without amdgpu.dpm=1 the GPU would crash either before Unigine Heaven had been started or shortly afterward) I hope this helps pinpoint the issue and if anyone can suggest other tests I can run to get more information please let me know.
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