<p>I found this <a href="http://www.overclock.net/t/1487157/gridseed-help" rel="nofollow">link</a> apparently cgminer doesn't like usb3 according to the forum post don't know why I thought usb3 is backwards compatiable. But I tried thinking this is bull but it worked.</p>

CC BY-SA 3.0
2015-03-25T02:46:16.067Z
2015-03-25T02:46:16.067Z
Daniel Lopez
<p>Okay so I have done my research, I have practically tried everything. It just frustrates me because mining LTC was a piece of cake but I can't seem to figure out how to mine bitcoins which this device says it can do bitcoins plus dual mining.</p>

<p>I have tried BFGminer but it seems not to detect my gridseed unless I am mining LTC. Then I tried CPUMiner and it works except it gets invalid all the time its like its using the wrong algorithm but I tried the -a sha256d and still produces the same issue. Can somebody help me I have the drivers installed and my usb Gridseed miner is on COM6. I have also tried CGMiner and it says cannot detect any USB devices.</p>

<p>I have tried every possible thing that comes up on the first few Google Results. I am not exactly new to mining as I have done Scrypt mining fine with this device. </p>

<p><a href="http://rads.stackoverflow.com/amzn/click/B00J4XPKJU" rel="nofollow">Here is the product.</a></p>

CC BY-SA 3.0
2015-03-24T04:37:32.153Z
Is there any sort of an error message printed when you try to mine, or are your shares rejected?
morsecoder
CC BY-SA 3.0
2015-03-24T22:48:43.567Z
For cpuminer it just rejects shares, I am not talking a few but all of them. For BFGMiner it doesn't detect it but I think BFGMiner doesn't support Gridseeds for mining BTC.
Daniel Lopez
<cgminer><asic><bfgminer><gridseed>
Gridseed USB ASIC Won't Mine Bitcoins
Daniel Lopez
# Gridseed USB ASIC Won't Mine Bitcoins

(Asked by: username_0 on 2015-03-23)

Okay so I have done my research, I have practically tried everything. It just frustrates me because mining LTC was a piece of cake but I can't seem to figure out how to mine bitcoins which this device says it can do bitcoins plus dual mining.

I have tried BFGminer but it seems not to detect my gridseed unless I am mining LTC. Then I tried CPUMiner and it works except it gets invalid all the time its like its using the wrong algorithm but I tried the -a sha256d and still produces the same issue. Can somebody help me I have the drivers installed and my usb Gridseed miner is on COM6. I have also tried CGMiner and it says cannot detect any USB devices.

I have tried every possible thing that comes up on the first few Google Results. I am not exactly new to mining as I have done Scrypt mining fine with this device.

[Here is the product.](http://rads.stackoverflow.com/amzn/click/B00J4XPKJU)

**Tags:** cgminer, asic, bfgminer, gridseed

> **Comments:**
> **username_1**: Is there any sort of an error message printed when you try to mine, or are your shares rejected?  
> **username_0**: For cpuminer it just rejects shares, I am not talking a few but all of them. For BFGMiner it doesn't detect it but I think BFGMiner doesn't support Gridseeds for mining BTC.  

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## 1 answers

### Answer by username_0 on 2015-03-25. Score: 1 | Accepted answer

I found this [link](http://www.overclock.net/t/1487157/gridseed-help) apparently cgminer doesn't like usb3 according to the forum post don't know why I thought usb3 is backwards compatiable. But I tried thinking this is bull but it worked.


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