Quote from: LazyOtto on July 28, 2013, 08:07:04 PM

Quote from: mighq on July 28, 2013, 08:48:32 AM

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.