xmrig-nvidia only detects 2 of 6 GPUs
Specs
* ubuntu 16.04
* 6 x 1070 ti

`xmr-stak-nvidia`, `excavator`, `marlin`,  and `claymore dual miner` see all 6 

My **favourite** miner `xmrig-nvidia` sadly does not... 

[Please help!](https://www.youtube.com/watch?v=1eSMxRya2S8)
