Hoping someone with Gridseed 5-chip device can help. I can mine LTC no problem but when trying to use any cgminer for bitcoin mining, I get a high level of LW (Local Work) completed, but nothing seems to hash back to the pool.
The error I am seeing upon running in debug mode is the following:
GSD0: GetResults (amt=0 err=-7 ern=110)

I am running with the following command with cgminer 3.8.5
/cgminer -o stratum+tcp://stratum.bitcoin.cz:3333 -u user -p password --gridseed-options=baud=115200,freq=800,chips=5,modules=1,usefifo=0,btc=16 --hotplug=0

I've tried every GridSeed cgminer variant out there and seeing what my options are. I'm just testing with 1 right now, but same behaviour with other GridSeed devices.
My setup is the following: Dedicated 12V 5A power supply for GridSeed
5A 4 port USB hub with only the GridSeed attached
Running Ubuntu 15.10

I would really like to get the GridSeeds working if in fact they can mind BTC at 10Gh/s and LTC at 300kh/s