sunk818, racebyu I have a laptop connected and i have two separate hubs for 8 USB sticks MLD2. The problem is that if power failure and after comes back even if i connect remote to laptop and restart bfgminer i still get FutureBit write error after 2-3 minutes. And to get them run again i have to restart hubs and is need to be there.
The laptop still run on battery after power goes down. I don't know if i can find a solution.
Hum, that is a interesting one, I have had once before in the past the same issue and needed to unplug and re-power the usb hub for it to clear.
If it does it again try to shut down your laptop completely and restart (not reboot) then run Bfgminer again and see if it works after 2-3 min?
Then you can eliminate the laptop USB as the issue. We it happens next time try to close Bfgminer and make sure its shut down, remove one miner
only (so not powered) plug back in and start Bfgminer and see if the one unit hashes again or you get a error after 2-3 min. Not sure but maybe
one of the miners is locking up the usb data line? As stated power can also be a issue, what freq are you running them at? These at higher freq 800+
can take over 10 watts each as the chips power draw increases almost exponentially at higher frequencies and the enough power can be critical.