Pool Mining doesn't work but hashrate @3gh/s

[Erdi]

Hi everyone.
I installed my block erupter and after a few fails managed to get it up and running. I'm trying to mine PPC from coinotron but I don't understand why it doesn't work.
I have my ASIC USB listed on cgminer, but I don't get any jobs and I don't see my hashrate on coinotron.com 

cgminer version 3.4.2 - Started: [2013-11-01 15:07:47]
------------------------------------------------------------------------------
 (5s):2.676G (avg):2.561Gh/s | A:0  R:0  HW:45  WU:0.2/m
 ST: 11  SS: 0  NB: 1  LW: 0  GF: 0  RF: 0
 Connected to coinotron.com diff 16 with LP as user *********
 Block: 00e8401f1dc2c222...  Diff:6.96M  Started: [15:07:46]  Best share: 84
------------------------------------------------------------------------------
 [P]ool management (S)ettings [D]isplay options [Q]uit
 AMU 0:                | 139.3M/250.8Mh/s | A:0 R:0 HW:14 WU:0.0/m
 AMU 1:                | 425.3M/310.3Mh/s | A:0 R:0 HW: 7 WU:0.0/m
 AMU 2:                | 333.3M/327.1Mh/s | A:0 R:0 HW: 0 WU:0.0/m
 AMU 3:                | 348.6M/321.6Mh/s | A:0 R:0 HW: 6 WU:0.0/m
 AMU 4:                | 333.3M/326.9Mh/s | A:0 R:0 HW: 0 WU:0.0/m
 AMU 5:                | 224.6M/265.8Mh/s | A:0 R:0 HW:12 WU:0.2/m
 AMU 6:                | 333.3M/310.7Mh/s | A:0 R:0 HW: 2 WU:0.0/m
 AMU 7:                | 333.8M/343.3Mh/s | A:0 R:0 HW: 3 WU:0.0/m
 AMU 8:                | 333.3M/332.0Mh/s | A:0 R:0 HW: 1 WU:0.0/m
------------------------------------------------------------------------------
 [2013-11-01 15:09:25] Hotplug: Icarus added AMU 8
 [2013-11-01 15:10:24] USB: AMU7 read1 buffering 4 extra bytes

I don't really know what to do to get this running, anyone has an idea ?

Many thanks,

Erd.

[1714826652]

1714826652

[pontiacg5]

I'd bet a shiny new nickel you are running a garbage USB hub that isn't giving your miners enough power. Search for USB hubs for block eruptor, you'll figure out what's going on that way.

You have no accepted shares, your miners aren't doing anything at all.

[Erdi]

I'm using http://www.satechi.net/index.php/satechi-12-port-usb-hub-with-power-adapter-2-control-switches

I plugged the hub.

So maybe if I used less USB it'll work ?

(Thanks for your quick answer)

[pontiacg5]

I have the same hub tough not for USB ASICs, try running two usb miners only on it. I suspect you will see valid shares then.

Please look up Cgminer shares, such as accepted, rejected, and HW errors. If you are going to mine it would do you really good to know these things! Add miners to your hub till the hardware error rate is within .5 to 3% of the total accepted shares.

[Erdi]

Alright, I tried with 2~3~4, and you're right, with 2 it works fine but with more it doesn't go really well. Thanks.

Do you have any advice for a good usb hub block erupter ?

[pontiacg5]

I like the dlink dub-h7, it will run 5-6 miners reliably. There is a thread with a list of good hubs, search for "block eruptor USB hub list" on this forum and you should find it.

[balanghai]

Well try buying another same usb hub and try splitting the miners in 2 groups. It should make it all run.

[pontiacg5]

Well try buying another same usb hub and try splitting the miners in 2 groups. It should make it all run.

Very dumb idea, the shatechi hub is only able to run 2 regularly. Looks like he has at least 9 miners to me. It most certainly WILL NOT run split in two groups of the same hubs. 

[Erdi]

Thanks for your answers, I'm gonna check out for another hub

Balanghai, I don't think that's a good idea... a 12 port hub that runs only 2 keys isn't really something I'm gonna buy again