I'm currently using multiple cards for crypto mining. I was using an rx560, rx470, and rx580 in the same Linux system with Ubuntu version 16.04.3. I have been able to get these cards to function with no problem. I thought I'd get a Vega Frontier and attempt to replace the rx560 with the Vega in order to get a higher hash rate out of my rig. I can get the Vega Frontier to work when it's the only card in the system, however if I add and of the Radeon cards I've been running before, it seems like it can no longer run the mining software against the Vega. Is there a compatibility issue or maybe I'm doing something wrong. Looking at the supported cards table with the 17.50 driver all of those cards are supported, I just can't seem to get them to run when together in the same system.
Thanks for any help you can give me.