It looks like one of chips is not doing well.
What can I do now to diagnose or fix the problem? Thanks for any ideas.
Have you tried after following this start-up sequence?
- stop mining software
- disconnect CM-1 USB cable
- disconnect USB hub cable to computer
- power down CM-1
- power down computer
- power up / boot computer
- power down USB hub
- power up CM-1
- wait until CM-1 fully stable (or, two solid minutes to be sure)
- power up USB hub
- connect USB hub cable to computer
- connect CM-1 USB cable
- start mining software
Yeah, it seems pretty nit-picky. But I've had that sequence resolve things for me before.
^^ that definitely helps, and if you're using the up/down cables with boards you might need more than one restart as the boards seem even more finicky when they're running master/slave.
Just a thought from a different angle - any telltale visual indicators from the boards? What are the leds doing (predominately)?
Are you seeing any yellow leds when in routine running? That might give a clue if the cause of your low hash rate is that the boards are starved of work and going idle.