Comment # 31
on bug 108521
from Alex Deucher
(In reply to Robert Strube from comment #30) > Hi Alex, > > Thanks for the reply. I wanted to clarify an important point: When I > disabled PM completely and ACPI completely, I did not see any PCI resource > issues AND the eGPU initialized successfully. > > acpi=off apm=off amdgpu.dpm=0 amdgpu.aspm=0 amdgpu.runpm=0 amdgpu.bapm=0 the only relevant items here are acpi=off and amdgpu.dpm=0. Did you test them independently or just together? setting dpm=0 is irrelevant if acpi=off since there will be no resource restrictions. You need to test them independently. > > I've been working with another user that has the exact same system (XPS > 9575) and an RX 580 and is having the same issues. He was actually able to > get the eGPU initialized by passing in PCI=noacpi rather than completely > disabling ACPI as a whole. I'll double check with him to see if he can post > his dmesg log - because I'm not sure if the PCI resource issues are present > under those circumstances. looks like the same issue as yours. PCI resources not getting assigned.
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