Hello,
I've succeeded to built stable 10 GPU rig on MSI RX 580 cards using Ubuntu 16.04(4.4.x kernel) and 17.10 drivers. (Asus Z270P + 2 splitters, disabled sound and serial in BIOS and enabled 4g)
But the problem is in power consumption(~200W per card on solo mining on modded bios) and hashrate(25MH only). Afaik there is no possiblity to increase mem frequency and downvolt cards in Linux and the only way is to flash the bios with fixed GPU/mem frequency and voltage. Does anybody have such expirience? It it too risky? I'm ready to donate some coins for useful suggestion or help in this question
Best regards,
Serge