Oddity with Radeon RX 6950XT

[zite]

I recently bought a Radeon RX 6950 XT switching from Nvidia GTX 1080. I have had no troubles with my Nvidia1080 and have had a fully working Windows VM but not with this Radeon card I can't seem to get it to pass through correctly.

Thank you for any tips.



Asus Crosshair VIII Dark Hero
- IOMMU Enabled
- 4G Enabled
- Rebar Enabled

Ryzen 5950x

Radeon RX 6950 XT

 

[Neobin]

- 4G Enabled
- Rebar Enabled

Try with both disabled.

 

[zite]

Yeah still same glitched screen. I'm getting common error 43 on the card in windows, just trying to figure it out if this glitched screen at startup is normal.

 

[leesteken]

Is the 6950XT used during boot (motherboard POST and Proxmox host console)? What kernel are you using (uname -a) andwhat is the VM configuration like (from the /etc/pve/qemu-server/ directory)? What is the output of cat /proc/cmdline? Do you early bind the GPU and/or blacklist amdgpu (i.e., how did you configure vfio-pci in /etc/modprobe.d/ directory)?

 

[zite]

Is the 6950XT used during boot (motherboard POST and Proxmox host console)? What kernel are you using (uname -a) andwhat is the VM configuration like (from the /etc/pve/qemu-server/ directory)? What is the output of cat /proc/cmdline? Do you early bind the GPU and/or blacklist amdgpu (i.e., how did you configure vfio-pci in /etc/modprobe.d/ directory)?

Made big progress. Finally took the time to read and understand what all the commands do.

I have no idea if I need either of the video= commands but since I have a single GPU I need to prevent Proxmox from using it.

/etc/kernel/cmdline

root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet amd_iommu=on iommu=pt video=efifbff video=simplefbff​

nano /etc/modules

vfio​

vfio_iommu_type1​

vfio_pci​

vfio_virqfd​

/etc/modprobe.d/pve-blacklist.conf

blacklist nvidiafb​

blacklist nouveau​

blacklist nvidia​

blacklist radeon​

blacklist amdgpu​

blacklist snd_hda_intel​

The amdgpu is what fixed it. Every guide said radeon, your reply was the first I saw amdgpu. Now that I blacklisted everything properly the card shows up in the add PCI device and my boot up is no longer glitched.



Thank you for pointing my in the right direction! Like I said I had no problem passing my GTX1080.