From Unraid to Proxmox for GPU passthrough?

[compiz]

Hello everybody!
I have a DeskMeet B660 with intel i3 13100 CPU, 32GB ram and an RX6600 GPU.
Right now I am using unraid and it works for making windows VM and passing through the GPU.
My only problem was that I had to turn ON CSM and disable rebar and so on to make it work, so my question is, with proxmox can I have CSM OFF and do hardware passthrough?
I am asking this because I am running windows vm with the GPU passthrough for some games but I also want to have a couple VM that are based on cloud image templates which I can't do with unraid.
And because I did a firmware update yesterday, I can't enable CSM in it now for unknown reasons (says to install GPU to pci-e to enable CSM and I have the RX6600)

 

[leesteken]

Right now I am using unraid and it works for making windows VM and passing through the GPU.
My only problem was that I had to turn ON CSM and disable rebar and so on to make it work, so my question is, with proxmox can I have CSM OFF and do hardware passthrough?

KVM/QEMU virtualization used by Proxmox does not support Resizable BAR yet , and will probably never support it being fully resizable.
I can't comment on the CSM and you'll have to test it yourself, but I don't see why passthrough would not work with CSM disable (as it works for many people).

And because I did a firmware update yesterday, I can't enable CSM in it now for unknown reasons (says to install GPU to pci-e to enable CSM and I have the RX6600)

Sometimes manufacturers make new BIOS versions that are worse than older versions. Sometimes they break passthrough completely. Maybe go back to a known working version?

 

[compiz]

Thanks, I will try to install PVE with CSM disabled and try again the passthrough