Edited by nexusnet at Tue Mar 3, 2015 10:26 |
Thanks for quickly responding.
I have tested the USB HDD with and without a powered USB hub. One hub that I used was from PiHut, made specifically to solve the power problems with Raspberry Pi B and B+. Also the Raspiado board is a Pi-sized externally powered USB hub made for use with Pi's. I tested with that also. Both have been tested on my Banana Pi machines using multiple external power supplies; including one that is a test bench power supply with adjustable voltage and high amps available. This USB drive works on my RasPi B and B+ boards with either of those hubs. Therefore I would expect that the drive would work with both hubs when used on a Banana Pi.
What really puzzles me, but causes me to suspect some problem other than power, is that both Banana Pi units also have exactly the same problem with a USB thumb drive. Again, I tested the thumb drive with and without an externally powered USB hub. And that thumb drive works even directly plugged to my Raspberry Pi machines.
Is it possible that my Banana Pi boards are defective? Are there tests that I can run other than using lsusb to determine if the USB chip is working right?