Is there any way to support Hawaii cards (ie: R9 270x 2GB)?
I haven't had much luck finding a linux-based miner that can play nicely with these older cards
SRBMiner-MULTI, PhoenixMiner, GMiner they work at least with my R9 390 8GB and RX 580 8GB cards. Probably there are more but I know for sure these miners work.
TRM I must say did work with my R9 390 but I switched to PhoenixMiner.