I have been testing with a BBB and have been getting good results, surprisingly as a BBB often has USB issues with devices. I also tried using a Odroid C2 which doesn't even see any devices so is totally useless. My next test is an old Odroid X2, which has been used as a controller for all of sidehack's and many other different miners. The only miner so far it hasn't worked with is the futurbit's.

BBB: Debian, Rosewill 10 port USB 2.0 hub
4x 606 390mv 180watt 1.9 / 1.92th
4x 606 430mv 320watt 3.16th    

Odroid X2: Ubuntu, Rosewill 10 port USB 2.0 hub
All usb device drop and cgminer crashes when auto-tune try's to change clock speed.