Server Version#: 1.41.3.9314
Recently installed a Quadro P4000 in my Unraid server. Got the Nvidia-Drivers installed. The drivers sees the card and as far as I can tell not seeing an issue. Plex has been running on my server for a few months with no issues. Tried getting the P4000 setup in Plex for hardware transcoding. At first it wasn’t showing up in the dropdown for Hardware Transcoding Device. It took some doing and much searching, but was able to resolve that and it let me assign the P4000 as the transcoding device.
Issue is whenever I try to transcode anything, playback freezes like it’s buffering, but nothing happens. The Plex dashboard shows the stream still there, but not transcoding, the timer is going but the preview image never changes.
I’ve let it sit for a minute or so seeing if it’ll show an error, but as far as I’ve seen it never does. Not sure what information you may need but I’ve included a couple screenshots of the docker variables and the transcode settings in Plex.
Note most of the configs I’ve seen do not have the “Nvidia Driver Capabilities” variable. I set this while troubleshooting, it was doing the same thing before and after setting that variable.
I was able to get two other docker containers (Jellyfin and Frigate) working using the P4000 card, so it does not appear to be an issue with the card as far as I can tell. Also double checked that software transcoding on Plex works fine.
I installed Plex again using a different repo (linuxserver’s) as a test, same issue. I also uninstalled, deleted and reinstalled Plex using the official repo which is what I’m currently running on.
I also pulled a log bundle from Plex while it was buffering after trying to get it to do HW transcoding and it was just sitting there buffering. I’ll admit I’m not 100% sure what I’m looking for but I wasn’t able to see any specific errors or anything of note.
Any assistance or guidance would be greatly appreciated.

