[SOLVED] Potential bug in Proxmox when passing through PCI device

[kurdtpage]

Hello. I think I have found a bug in the web UI of Proxmox VE 9.1.1.
When I am creating a new VM, I select some PCI devices to pass through.

Here I am adding 0000:0d:00.4 and I click on the Add button (note the 4 on the end)
<add.png>

However when I edit the very same item I just added, it shows as 0000:0d:00.0 (note the 4 is missing)
<edit.png>

What this means is the device that is passed through is different, and therefore the VM does not see the correct device.
Here is the list of PCI devices in that group. I am trying to pass through the HD Audio device (as well as one of my GPUs)
<list.png>

 

[kurdtpage]

Here is the terminal output from the host:

root@home:~# cat /etc/pve/qemu-server/101.conf | grep 0d
hostpci1: 0000:0d:00,pcie=1,rombar=0,x-vga=1
root@home:~#

For now, I will manually change the file to see if it fixes the issue

 

[Neobin]

Disable/Uncheck: "All Functions".

 

[Impact]

If your device has multiple functions (e.g. 00:02.0 and 00:02.1), you can pass them through all together with the shortened syntax 00:02. This is equivalent with checking the All Functions checkbox in the web interface.

Some context. Source.

 

[kurdtpage]

Thank you, yes that solved it!