Comment # 22
on bug 108521
from Robert Strube
OK! My hunch about the PM was right! The card is fully initialized now, so the issue doesn't appear to be a PCI resource issue! I took the brute force approach, compiled my own custom kernel that completely disabled the Vega M (by commenting out it's device IDs). I then passed in the following kernel boot parameters: acpi=off apm=off amdgpu.dpm=0 amdgpu.aspm=0 amdgpu.runpm=0 amdgpu.bapm=0 Rebooted the machine and *BAM* the eGPU was initialized! I'm attaching the new dmesg! I'm just super excited that I was able to get the eGPU initialized! xrandr even sees it! xrandr --listproviders Providers: number : 2 Provider 0: id: 0x74 cap: 0x9, Source Output, Sink Offload crtcs: 3 outputs: 7 associated providers: 1 name:modesetting Provider 1: id: 0x4a cap: 0x6, Sink Output, Source Offload crtcs: 6 outputs: 5 associated providers: 1 name:Radeon RX 580 Series @ pci:0000:09:00.0
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