I am having trouble getting 4 Newpacs to work with my PI4. I installed the latest CGMIner (Kano version as suggested in the GMiner forum - strangely this is 4.9.2 - hopefully the correct one)
No idea where one would get that old version.
Here is a link to a post that has the current version and compile instructions:
https://bitcointalk.org/index.php?topic=5355470.msg58200639#msg58200639