I can't answer your question but am curious about your configuration. I cannot get my gridseed 5 chip to run either dual or single without it crashing the Pi within 30 minutes. I've tried various compiles and what knot but no luck. I'm also headless so I can't see if there are any console errors. It works perfect in windows but the noise is too much for me to leave running in my room. Any information on your setup would be great. I used to have the Pi connected to two hubs with antminers. Now I just have the Pi connected directly to the Gridseed. Still crashes.
Another forum member told me about this, but what I did was:
Download minepeon 0.2.4.6 the newest version, then image onto a SD CARD - ( figured this be the easiest, since it already has all the dependencies installed)
then download the already compiled version of BFGMiner, and move the bfgminer binary and replace it in /opt/minepeon/bin/ . Then either sudo nano the miner.conf file or go to the browser and type in your minepeon IP ADDRESS and edit the start config there, with:
sleep 10
/usr/bin/screen -dmS miner sudo /opt/minepeon/bin/bfgminer --scrypt -S gridseed:all --set-device gridseed:clock=850 -c /opt/minepeon/etc/miner.conf
and you should be good to go
EDIT: check out this thread, step by step:
https://bitcointalk.org/index.php?topic=168174.3000;topicseen