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Author Topic: block erupter seems to work, but doesn't submit shares  (Read 810 times)
maud138
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November 05, 2013, 07:19:32 AM
 #1

I have two block erupters working with a Raspberry Pi. Everything worked just fine.
This morning however I noticed that only one of my block erupters was submitting shares. They both were flashing the green lights, cgminer recognised both erupters, but only one submitted shares.
After restarting cgminer everything worked fine again.

Does anyone know what happened? And what can I do about it to prevent this happening in the future?

Thanks
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HellDiverUK
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November 05, 2013, 03:53:35 PM
 #2

What difficulty is your pool set to?

You want to be as close to 1 as possible for a small number of BEs.  Bigger difficulty shares will take forever on a few BEs, and probably lead to stales.

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maud138
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November 05, 2013, 05:30:52 PM
 #3

I use Slush's pool. I believe difficulty is set automatically nowadays so that can't be the problem. Both erupters are on the same worker.
vm1990
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November 05, 2013, 11:59:41 PM
 #4

could have been an error in the connection or cgminer both are pretty rare the more likely is a short temporary error with connecton to the pool. normaly to do with the isp changing systems fro offpeak to onpeak and vice versa.

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pontiacg5
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November 06, 2013, 12:05:50 AM
 #5

I doubt this has anything at all to do with the pool. Anything to do with those would affect both USB devices.

If anything I'd guess it somehow lost power for a while. I don't know anything about pi's, are they running on a powered hub or direct? If they are on a hub maybe the wall-wart is on it's way out.

There weren't any errors showing up when you restarted cgminer were there? I'd imagine you would have mentioned that though...

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vm1990
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November 06, 2013, 12:10:51 AM
 #6

I doubt this has anything at all to do with the pool. Anything to do with those would affect both USB devices.

If anything I'd guess it somehow lost power for a while. I don't know anything about pi's, are they running on a powered hub or direct? If they are on a hub maybe the wall-wart is on it's way out.

There weren't any errors showing up when you restarted cgminer were there? I'd imagine you would have mentioned that though...

if it happens during a submit or request the erupters act weird when it happens to mine it normally just reports a com error and locks the erupter up with a solid green light. the only way to get it to mine again is unplug the erupter and plug it in again

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pontiacg5
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November 06, 2013, 12:16:49 AM
 #7

I doubt this has anything at all to do with the pool. Anything to do with those would affect both USB devices.

If anything I'd guess it somehow lost power for a while. I don't know anything about pi's, are they running on a powered hub or direct? If they are on a hub maybe the wall-wart is on it's way out.

There weren't any errors showing up when you restarted cgminer were there? I'd imagine you would have mentioned that though...

if it happens during a submit or request the erupters act weird when it happens to mine it normally just reports a com error and locks the erupter up with a solid green light. the only way to get it to mine again is unplug the erupter and plug it in again

Weird. I quit using cgminer for bfgminer, but occasionally I see one of mine go solid but it always rights itself automatically. I imagine it turns back off on the next submitted share, but I've never cared enough to check. 

Either way, with BFGminer I've been up for 2 days, 7 hours and 56 minutes and all 10 are within around 100 shares of each other, haven't had to touch them. I've gone longer, but do you have that problem more frequently than this? Might be worth changing maybe.

Hah, one just did it now! Silly eruptors  Grin

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vm1990
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November 06, 2013, 12:33:58 AM
 #8

I doubt this has anything at all to do with the pool. Anything to do with those would affect both USB devices.

If anything I'd guess it somehow lost power for a while. I don't know anything about pi's, are they running on a powered hub or direct? If they are on a hub maybe the wall-wart is on it's way out.

There weren't any errors showing up when you restarted cgminer were there? I'd imagine you would have mentioned that though...

if it happens during a submit or request the erupters act weird when it happens to mine it normally just reports a com error and locks the erupter up with a solid green light. the only way to get it to mine again is unplug the erupter and plug it in again

Weird. I quit using cgminer for bfgminer, but occasionally I see one of mine go solid but it always rights itself automatically. I imagine it turns back off on the next submitted share, but I've never cared enough to check. 

Either way, with BFGminer I've been up for 2 days, 7 hours and 56 minutes and all 10 are within around 100 shares of each other, haven't had to touch them. I've gone longer, but do you have that problem more frequently than this? Might be worth changing maybe.

Hah, one just did it now! Silly eruptors  Grin

they normaly correct themselves been going for 2 weeks without issue but every so often one will glitch and lock up the only way to correct it is restart cgminer or unplug the miner and plug it back in. im pretty sure its something to do with the actual erupters but its never ever happend using bitminter client so it could be the software

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maud138
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November 06, 2013, 05:28:52 PM
 #9

Both erupters are in a powered hub.
Usually when one stops it gives a solid green light, but that wasn't the case. It looked like it was working just fine: flashing green lights, but cgminer only noticed shares of the other erupter.
Very strange, I do hope it doesn't happen again. I keep an eye on my hashrate at Slush's....
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