Comment 7 for bug 1920674

I have tried the most recent kernel 5.12-rc8 to complete the information needed for further investigation. The results are about the same as for the previously tested 5.8.0-* & 5.11.8-051108, i.e.:

ACP disabled
 - Xorg amdgpu driver loaded & acceleration working
 - suspend/resume ok
 - hibernation fails (hibernation image not created, PC seems to freeze but does not shut down, hard reset needed)

ACP enabled
 - I get black screen, Xorg fails to start, PC unresponsive
 - suspend/hibernation cannot be tested

Is there any other information I can/should provide?