Bitcoin Erupter not hashing properly?

[ppumkin]

I setup p2pool on my ubuntu  12.04LTS x64 machine. Installed cgminer 3.3 and ran it. the newest cgminer is supposed to support the USB mode without any extra configuration.

I have 2 erupters on a powered usb2 hub and 2 running off the motherboard direct. the hashing is just not stable. jumping from 50mh to 300, then getting sick and restarting- there are a ton of rejects. I don't know what is wrong. I have been reading all the posts one after the other and I am stumped. Please can somebody help me.

https://i.imgur.com/A9uUCKB.png

[1713958910]

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[1713958910]

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[1713958910]

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[bobsmith652]

How are you supplying the power?  What is the rating of the supply?

[ssateneth]

Sucks for you. Maybe you should sell them? .8 bitcoins each

[ppumkin]

How are you supplying the power?  What is the rating of the supply?

2 are on a powerd hub 2A .. and 2 are on the USB port on the back panel (not front panel) - I put those there to check if any difference.

[ppumkin]

I isntalled bfgminer.

Rebooted the system and restarted bitcoind, p2pool and run bfgimer with -S all

Works like it should now... bloody hell what a mission Big Fu88en Good Miner kicks ass today...

https://i.imgur.com/lfJ3g97.png

[hyperdallas]

wow you are getting 400-500 mhash on the usb things? i though they are only 336 m/hash? explain your secrets

[ppumkin]

wow you are getting 400-500 mhash on the usb things? i though they are only 336 m/hash? explain your secrets

Lol. I wish dude. Those things are already overclocked to a mid level. hence the HW errors every now and again. Those values only showed up for about 30 seconds. It settled down now to the advertised 335mh/s Possibly if they get cooled better it would increase it slightly.