5700g passthrough to Linux System - Guest monitor freezing

[RyzenMakesMeCry]

Hey there! I have had partial success in passing through my 5700g to a PopOS VM. However I am running two issues.

1. The plugged in monitor freezes on the guest UEFI boot screen
2. On subsequent reboots of the VM, the monitor shows the loading bar of the UEFI boot screen and nothing else

I suspect the second issue is due to the vendor-reset bug, but looking for support on resolving both. Below are my settings / process.

1. I followed https://github.com/isc30/ryzen-gpu-passthrough-proxmox - extracting the GPU .dat / audio .rom and passing them through

VM conf

args: -cpu 'host,+kvm_pv_unhalt,+kvm_pv_eoi,hv_vendor_id=NV43FIX,kvm=off,-hypervisor'
balloon: 0
bios: ovmf
boot: order=scsi0;ide2;net0
cores: 8
cpu: host,hidden=1,flags=+pcid
efidisk0: local-lvm:vm-100-disk-0,efitype=4m,size=4M
hostpci0: 0000:11:00.0,x-vga=1,pcie=1,romfile=vbios_1638.dat
hostpci1: 0000:11:00.1,pcie=1,romfile=AmdGopDriver.rom
ide2: local:iso/pop-os_22.04_amd64_nvidia_42.iso,media=cdrom,size=3005824K
machine: q35
memory: 28672
meta: creation-qemu=8.1.5,ctime=1726335849
name: PopOS
net0: virtio=BC:24:11:EB:51:60,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: local-lvm:vm-100-disk-1,iothread=1,size=256G
scsihw: virtio-scsi-single
smbios1: uuid=a2d60c80-a379-45e2-bf39-1fca1deaf087
sockets: 1
vga: none
vmgenid: d8e49c2d-1205-4426-8f1a-60bfdf472ec0

GPU are in isolated iommu groups

IOMMU group 31 11:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] [1002:1638] (rev c8)
IOMMU group 32 11:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir Radeon High Definition Audio Controller [1002:1637]

cat /etc/default/grub

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="amd_iommu=on iommu=pt initcall_blacklist=sysfb_init nomodeset video=vesafb:off"
GRUB_CMDLINE_LINUX=""

cat /etc/modprobe.d/blacklist.conf

blacklist radeon
blacklist nouveau
blacklist nvidia
blacklist amdgpu

cat /etc/modprobe.d/vfio.conf

options vfio-pci ids=1002:1638,1002:1637 disable_vga=1

 

[RyzenMakesMeCry]

One other thing of note is when I attempt to run update-initramfs -u -k all I get the following error, and so I am not sure if it is actually updating properly:

update-initramfs: Generating /boot/initrd.img-6.8.12-16-pve
Running hook script 'zz-proxmox-boot'..
Re-executing '/etc/kernel/postinst.d/zz-proxmox-boot' in new private mount namespace..
No /etc/kernel/proxmox-boot-uuids found, skipping ESP sync.
System booted in EFI-mode but 'grub-efi-amd64' meta-package not installed!
Install 'grub-efi-amd64' to get updates.
Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.
Alternatively, use --esp-path= to specify path to mount point.
update-initramfs: Generating /boot/initrd.img-6.8.12-10-pve
Running hook script 'zz-proxmox-boot'..
Re-executing '/etc/kernel/postinst.d/zz-proxmox-boot' in new private mount namespace..
No /etc/kernel/proxmox-boot-uuids found, skipping ESP sync.
System booted in EFI-mode but 'grub-efi-amd64' meta-package not installed!
Install 'grub-efi-amd64' to get updates.
Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.
Alternatively, use --esp-path= to specify path to mount point.
update-initramfs: Generating /boot/initrd.img-6.8.12-9-pve
Running hook script 'zz-proxmox-boot'..
Re-executing '/etc/kernel/postinst.d/zz-proxmox-boot' in new private mount namespace..
No /etc/kernel/proxmox-boot-uuids found, skipping ESP sync.
System booted in EFI-mode but 'grub-efi-amd64' meta-package not installed!
Install 'grub-efi-amd64' to get updates.
Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.
Alternatively, use --esp-path= to specify path to mount point.
update-initramfs: Generating /boot/initrd.img-6.8.4-2-pve
Running hook script 'zz-proxmox-boot'..
Re-executing '/etc/kernel/postinst.d/zz-proxmox-boot' in new private mount namespace..
No /etc/kernel/proxmox-boot-uuids found, skipping ESP sync.
System booted in EFI-mode but 'grub-efi-amd64' meta-package not installed!
Install 'grub-efi-amd64' to get updates.
Couldn't find EFI system partition. It is recommended to mount it to /boot or /efi.
Alternatively, use --esp-path= to specify path to mount point.

 

[leesteken]

System booted in EFI-mode but 'grub-efi-amd64' meta-package not installed!
Install 'grub-efi-amd64' to get updates.

Might be related to https://pve.proxmox.com/wiki/Upgrade_from_8_to_9#GRUB_Might_Fail_To_Boot_From_LVM_in_UEFI_Mode . You should install it using apt install grub-efi-amd64.

Lots of little things (that used to be necessary for NVidia) are nonsensical for AMD GPUs but I don't know how to get your passthrough working, sorry:

args: -cpu 'host,+kvm_pv_unhalt,+kvm_pv_eoi,hv_vendor_id=NV43FIX,kvm=off,-hypervisor'

,hidden=1,flags=+pcid

,x-vga=1

amd_iommu=on video=vesafb:off

blacklist radeon
blacklist nouveau
blacklist nvidia

 

[RyzenMakesMeCry]

Might be related to https://pve.proxmox.com/wiki/Upgrade_from_8_to_9#GRUB_Might_Fail_To_Boot_From_LVM_in_UEFI_Mode . You should install it using apt install grub-efi-amd64.

Lots of little things (that used to be necessary for NVidia) are nonsensical for AMD GPUs but I don't know how to get your passthrough working, sorry:

Thanks for the info! I will try and see if it resolves!

 

[leesteken]

Thanks for the info! I will try and see if it resolves!

I don't expect my suggestions to resolve your issue (as I tried to say before). I just see lots of little things that don't make sense (to me).

 

[RyzenMakesMeCry]

I don't expect my suggestions to resolve your issue (as I tried to say before). I just see lots of little things that don't make sense (to me).

Yep! Sorry for the misunderstanding

If it does help, I filtered dmesg on my guest VM to 'amdgpu' and got the following result: https://pastebin.com/bQ4wL0dF