I build 2 rigs in the exact same configuration. 6x RTX3080 LHR attached with risers on a MSI B450-A Pro Max motherboard. PSU is a 1800W Mining PSU, no adaptors. One of the rigs ist just running fine. With the other i get this error.
nbminer Device 0: LHR Lock detected 1, wait to unlock
The hashrate for the cards sinks down. After 30sec its activated again and Mining is stating. Than after 30sec again this error. I changed the GPU, changes the risers, changes, the motherboard, changed the RAM, changed the CPU. Nothing worked. Still the same error. I found nothing about this error in the web. Can someone help me and knew how to fix this problem? When I unplug the GPU its running fine without any errors. So I thaught the GPU is bad, but a new GPU has the same problem.