I have exact same problem, I can only start cgminer when i have one antminer u1 connected. Then i just keep adding them to the usb hub, but i cant run cgminer with all 9 miners connected. I alsways have to start only one connected. How can i fix this issue?
I've got the same problem, and I leave one U1 connected to the PC all the time, then start cgminer. When the first U1 gets up to speed I plug in the USB hub with all the other U1's and wait for them all to be auto detected.
Its a work around and not a solution, but it saves plugging them in one by one.
Hopefully the software will be updated soon.