4 vegas in unbuntu 16.04, rocm 18, only  2 of them work.
vega 0 freezes linux and vega 3 stuck  

Start Mining...
Average speed (5s): 21.1958 sol/s | 23.3953 sol/s | 0 sol/s Total: 44.5911 sol/s
Average speed (5s): 23.7952 sol/s | 21.1958 sol/s | 0 sol/s Total: 44.991 sol/s
Error: lolMiner-zero detected that device 3 is stucked
Shutting down lolMiner-zero


Edit -- I see it is a RAM size issue, 4gb.