See Plex in FreeNAS jail and vaapi Intel hardware acceleration support which applied to my situation. Post boot the address I had was 0x187 and when loaded from pre-boot it then got 0x17. Which seemed to work. XigmaNAS is essentially FreeBSD but there’s a lot of custom stuff and mods in there so it is slightly different. But if it works… In any event, I will be working with the XigmaNAS devs to make the Plex extension installer also enable HW transcoding.
