Comment # 18
on bug 109135
from Alex Deucher
(In reply to rmuncrief from comment #17) > Yes, As I said in the beginning if you don't set amdgpu.dpm=1 the system > boots but resume doesn't work. I presume it's because power management isn't > working. All kernels before 4.19.x work great, and have no problem with > resume so long as dpm is enabled. dynamic power management is always enabled by default. the only way to disable it is to set dpm=0. dpm=1 either does nothing or changes the implementation used in the driver depending on the asic. You shouldn't set dpm= unless you are debugging something. For your asic, kernels 4.18 and older the default was the original dpm implementation; setting dpm=1 used the newer powerplay code. For kernel 4.19 and newer, the default implementation switched to the newer powerplay code and setting dpm=1 switched back to the older implementation. So removing dpm=1 is correct for 4.19 and newer. Can you elaborate on the resume issue?
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