I’m trying to assign my external GPU in a Razer Core X case connected on the thunderbolt 3 port of my T470. Unfortunately, if I start a VM where the thunderbolt related hardware are assigned, on R4.1 the system freezes, on R4.2 it reboots.
Following the recent guides about Gaming HVM and VirtualGL, I got a bit further.
With the hide_pci kernel option, the system doesn’t reboot anymore. But yet, I’ve not been able to use the GPU for rendering or its display, but it’s progress. I have an NVIDIA card in it, I’ll swap with an AMD because the support should be easier, I won’t have to fight with nouveau and struggle installing the proprietary driver.