AMD GPU Vega 56 on Linux

[8080git]

Hi,
i have this error with my 6 GPU And Vega 56 on Linux Ubuntu 16.04

GPU #0 recognized as Vega
card 0, m1 8176, m2 4048 w 448
GPU #1: gfx900 (Radeon RX Vega), 8176 MB available, 56 compute units (pci bus 6:0:0)
GPU #1 recognized as Vega
card 1, m1 8176, m2 4048 w 448
GPU #2: gfx900 (Radeon RX Vega), 8176 MB available, 56 compute units (pci bus 10:0:0)
....
POOL version
b141 
Platform: Linux
start building OpenCL program for GPU 0...
done
start building OpenCL program for GPU 1...
....
GPU #0 algorithm ASM, -h 3072, -dmem 0 (Memory used: 6297MB)
GPU #0 - NOTE: this miner is not optimized for Vega
GPU #1 algorithm ASM, -h 3072, -dmem 0 (Memory used: 6297MB)
GPU #1 - NOTE: this miner is not optimized for Vega

[sothcott]

That's not an error, it's a message telling you that Claymore is not optimised for VEGA. As long as you get above 1800H per card then you're doing OK. If not then you may need to install Windows 10, Driver 18.3 and CAST-XMR for VEGA.
If you want the latest Linux drivers (which would be a good idea with VEGA) then I suggest you start with Linux Mint 19 and follow the Ubuntu instructions. It's much more up to date than Ubuntu 16.