I was able to remove a hub that my keyboard and mouse were using, so now I can run 10 sticks. Starts doing the same thing again when I try to go to 11 now.
Is is it doing the same thing or different? Meaning do sticks just reboot from lower to higher frequency or they drop out completely? What's the CPU usage?
Mine is at 20% now, running 16 sticks at 500Mhz
The way to see that your USB bus is overloaded is your CPU usage, it will skyrocket. It only happened when I plugged in another hub WHILE cgminer RUNNING. When it happens, just stop cgminer (ctrl-c) and run it again, to save your PI from extra heat, it should zoom at around 20% normally.
If I plug in and turn all hubs on BEFORE i run it, it would just find x amount of sticks (not all) and just run normally at low CPU load.
So, it the cgminer that gets confused by all the hub stuff and goes nuts.
Btw, I'm only using USB 2.0 ports (white inside), don't use USB 3.0 ports (blue inside)
Try only running 2 USB wires to PI (to USB 2.0 ports!), only from 2 hubs, rest of the hubs just interconnect, meaning connect the wire from hub 1 and 2 to PI, as for the other hub - just plug in the USB wire to hub 1 or 2. Let me know if it works. You can plug in keyboard/mouse directly into your other 2 ports on PI.
Sticks just start dropping out into zombie. Cpu is at 85%. I'm only using usb 2.0 and tried running the third hub off of one of the other two and that didn't help. Still can't go over 10 sticks.