SOLVED: Trouble passing through A380 to Proxmox LXC Container

[umaxtu]

Solution: So I noticed that the numbers in the 6th column of the ls -l output didn't match the numbers after the colon on the lxc.cgroup2.devices.allow lines in the container config file. I changed the numbers in the config file to match what I was seeing in the container (1 and 129 respectively) and it worked! I have no idea what those numbers represent, but it worked!

Problem:
I'm trying to pass through and Intel Arc A380 to a proxmox lxc container (debian bookworm container), but when I try to run /usr/lib/jellyfin-ffmpeg/vainfo --display drm --device /dev/dri/renderD128
I get:

Code:

Trying display: drm

Failed to open the given device!

I've also tried the non-jellyfin vainfo and only get:

Code:

Failed to open the given device!

Here is my config file for the container:

Code:

arch: amd64
cores: 2
hostname: airbus
memory: 2048
net0: name=eth0,bridge=vmbr0,firewall=1,hwaddr=BC:24:11:C2:07:79,ip=dhcp,type=veth
ostype: debian
rootfs: pool:subvol-102-disk-0,size=8G
swap: 512
lxc.cgroup2.devices.allow: c 226:0 rwm
lxc.cgroup2.devices.allow: c 226:128 rwm
lxc.mount.entry: /dev/dri/card1 dev/dri/card0 none bind,optional,create=file
lxc.mount.entry: /dev/dri/renderD129 dev/dri/renderD128 none bind,optional,create=file

output of ls -l /dev/dri on proxmox:

Code:

ls -l /dev/dri
total 0
drwxr-xr-x 2 root root        120 Dec 14 22:57 by-path
crw-rw---- 1 root video  226,  0 Dec 14 22:57 card0
crw-rw---- 1 root video  226,  1 Dec 14 22:57 card1
crw-rw---- 1 root render 226, 128 Dec 14 22:57 renderD128
crw-rw---- 1 root render 226, 129 Dec 14 22:57 renderD129

in the container:

Code:

ls -l /dev/dri
total 0
crw-rw---- 1 root video 226,  1 Dec 15 03:57 card0
crw-rw---- 1 root input 226, 129 Dec 15 03:57 renderD128

I'm pretty sure I've got the firmware setup correctly because I installed vainfo on proxmox itself and when I run vainfo --display drm --device /dev/dri/renderD129
It works, and I know its talking to the A380 vs the iGPU because I see AV1 listed as supported.

Another interesting tidbit is that I edit the container config to passthrough the iGPU, it works.

Hopefully I am missing something obvious.