problem with lxc and jellyfin, "almost" solved, pls help

[rcv11x]

Guys I have a question to see if you can help me, I have jellyfin inside a proxmox LXC, the transcoding was going well until a few days ago I updated proxmox, I get an error now after being several hours I have realized that I get an error in the log of jellyfin:

[AVHWDeviceContext @ 0x556b9f5a66c0] No VA display found for device /dev/dri/renderD128. Device creation failed: -22. Failed to set value 'vaapi=va:/dev/dri/renderD128' for option 'init_hw_device': Invalid argument Error parsing global options: Invalid argument

it turns out that if inside the lxc I run:

ls -l /dev/dri/

I get back:

crw-rw---- 1 root syslog 226, 128 Feb 15 07:37 renderD128

where it says syslog should be render, if I change the permissions with:

sudo chown root:render /dev/dri/renderD128

magically the transcoding works and no longer gives me error! but ... when I restart the pc proxmox pc that permission is set again in syslog, how could I fix this? I do not know if this happened before because I did not look but it should be render that is how it works not with "syslog" if someone can help me I would appreciate it very much, I think it has an easy solution

[RealJustMe]

i had this problem with emby an my solution was this:
#747 (reply in thread)

[rcv11x]

hey, thanks a lot for your answer! when i get home later i'll try it out ;)

[RealJustMe]

Hope it works for you too :)
Just be sure to get the correct group ID for render (107 in my case)

[Stooovie]

Doesn't fix my issue (I have the same original error message: [AVHWDeviceContext @ 0x556b9f5a66c0] No VA display found for device /dev/dri/renderD128. Device creation failed: -22. Failed to set value 'vaapi=va:/dev/dri/renderD128' for option 'init_hw_device': Invalid argument Error parsing global options: Invalid argument)

ls -l /dev/dri/ returns

total 0
-rw-rw-rw- 1 root render 0 Nov  6 17:10 renderD128

and sudo chown root:render /dev/dri/renderD128 doesn't fix it. It has been working for 6 months until today.