GPU passthrough Win11 code 43 GeForce RTX 3080

[DocMAX]

It used to work but something happened and i get error code 43 all the time. I tried all kernel switches and configs described in the threats here. No chance,
Does anyone have the same GPU and can share a working setup?
pve-manager/8.0.4/d258a813cfa6b390 (running kernel: 6.2.16-15-pve)

 

[Moayad]

Hello,

May you post the output `dmesg` from Proxmox VE as attach?

 

[DocMAX]

Yes of course:

[Mo Okt 30 10:20:29 2023] device tap300i0 entered promiscuous mode
[Mo Okt 30 10:20:29 2023] vmbr0: port 2(fwpr300p0) entered blocking state
[Mo Okt 30 10:20:29 2023] vmbr0: port 2(fwpr300p0) entered disabled state
[Mo Okt 30 10:20:29 2023] device fwpr300p0 entered promiscuous mode
[Mo Okt 30 10:20:29 2023] vmbr0: port 2(fwpr300p0) entered blocking state
[Mo Okt 30 10:20:29 2023] vmbr0: port 2(fwpr300p0) entered forwarding state
[Mo Okt 30 10:20:29 2023] fwbr300i0: port 1(fwln300i0) entered blocking state
[Mo Okt 30 10:20:29 2023] fwbr300i0: port 1(fwln300i0) entered disabled state
[Mo Okt 30 10:20:29 2023] device fwln300i0 entered promiscuous mode
[Mo Okt 30 10:20:29 2023] fwbr300i0: port 1(fwln300i0) entered blocking state
[Mo Okt 30 10:20:29 2023] fwbr300i0: port 1(fwln300i0) entered forwarding state
[Mo Okt 30 10:20:29 2023] fwbr300i0: port 2(tap300i0) entered blocking state
[Mo Okt 30 10:20:29 2023] fwbr300i0: port 2(tap300i0) entered disabled state
[Mo Okt 30 10:20:29 2023] fwbr300i0: port 2(tap300i0) entered blocking state
[Mo Okt 30 10:20:29 2023] fwbr300i0: port 2(tap300i0) entered forwarding state
[Mo Okt 30 10:20:30 2023] vfio-pci 0000:06:00.0: vfio_ecap_init: hiding ecap 0x1e@0x258
[Mo Okt 30 10:20:30 2023] vfio-pci 0000:06:00.0: vfio_ecap_init: hiding ecap 0x19@0x900
[Mo Okt 30 10:20:30 2023] vfio-pci 0000:06:00.0: vfio_ecap_init: hiding ecap 0x26@0xc1c
[Mo Okt 30 10:20:30 2023] vfio-pci 0000:06:00.0: vfio_ecap_init: hiding ecap 0x27@0xd00
[Mo Okt 30 10:20:30 2023] vfio-pci 0000:06:00.0: vfio_ecap_init: hiding ecap 0x25@0xe00

Also my config:

args: -cpu 'host,kvm=off,hv_vendor_id=NV43FIX,+hypervisor,+topoext'
bios: ovmf
boot: order=virtio0;ide2;net0;ide0
cores: 32
cpu: host,hidden=1
efidisk0: zpool-nfs:300/vm-300-disk-0.qcow2,efitype=4m,pre-enrolled-keys=1,size=528K
hostpci0: 0000:06:00.0,romfile=vgabios-rtx3080.bin,x-vga=1
hostpci1: 0000:08:00.4
machine: pc-q35-8.0
memory: 8192
meta: creation-qemu=8.0.2,ctime=1698618264
name: win-pt-game
net0: virtio=C6:B7:7C:92:33:BE,bridge=vmbr0,firewall=1
numa: 0
ostype: win11
scsihw: virtio-scsi-single
smbios1: uuid=fe8d8ba6-0f8f-4d71-a21a-269ba7b4b619
sockets: 1
tpmstate0: zpool-nfs:300/vm-300-disk-0.raw,size=4M,version=v2.0
usb0: host=0c45:5004
usb1: host=093a:2533
virtio0: local:300/vm-300-disk-0.qcow2,discard=on,iothread=1,size=128G
vmgenid: 207513b5-ff11-476e-af90-ce0256cf355c

 

[DocMAX]

Also tried:

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

And different q35 versions.

 

[Moayad]

Does this issue only on the VM Win11 or all VMs?

 

[DocMAX]

Does this issue only on the VM Win11 or all VMs?

I just started an old VM i had. Win7 with Nvidia 456.38 driver. No issues...

 

[DocMAX]

Now it's working. I removed "cpu: host,hidden=1" completly and also the args. Why is it working?!?

 

[leesteken]

Now it's working. I removed "cpu: host,hidden=1" completly and also the args.

What is the CPU Type set to now according to the Proxmox GUI? Is it kvm64 or x86-64-v2?

Why is it working?!?

I think you need to ask NVidia (or maybe Microsoft) that question. What did they change that broke passthrough with Code 43 again? Anyway, glad you got it working.

 

[DocMAX]

 

[leesteken]

View attachment 57284

I fear kvm64 is not ideal as many helpful CPU instructions are not available. PVE 8 has the more capable x86-64-v2 as default. Maybe try selecting a generic Intel or AMD of the same family as your actual CPU?

 

[DocMAX]

OK, this is crazy... adding host,hidden=1 again is still working... so something else happened which is not understandable. All of the sudden it's working with ANY config.