Hey, and thanks for the hint.
I got it working yesterday - but only with claymore zec 12.6 miner.
When I try Ethereum or Monero claymore it starts mining and I also can retrieve the hashrate via teamviewer.
But then it suddenly crashes - PSU makes a tick noise and reboots.
Under Windows Monero and Ethereum works smoothly.
I am very grateful for and advice. Cheers.
I had similar experiences with a bunch of mixed brands RX480 running over clocked on SMOS
I established a working setup by starting without ANY OC settings in SMOS
Once this works for a few hours you can start changing 1 parameter after another, every few hours, not all at once
This way you will figure out which parameter or value is too aggressive and you will scale back.
Takes a lot of time but once running it hardly crashes.