ANTMINER U3 Discussion and Support Thread

[Phosphorous]

Its the other way around, there are 10,000s of U3s out there and only a handful of complaints. There are more problems then Bitmain would like but its not as doomsday as you're portraying.

OK, so why won't anyone here post claiming that they don't have a complaint with theirs?

[q]There was no mainstream cgminer support, Bitmain releases and maintains its own cgminer branch which was published before release.[/q]
We all tried that CGMiner and it was GARBAGE and didn't support any other miners. Go back to the beginning of the thread.

I have 1 Rockminer R-Box. This thing is solid. It just works.

You should test without the R-box (assuming you mean new R-box?) Its known to conflict with U3s as they both use the same ID chip.
[/quote]
Believe me I did. Didn't make a difference.

[dogie]

Its the other way around, there are 10,000s of U3s out there and only a handful of complaints. There are more problems then Bitmain would like but its not as doomsday as you're portraying.

OK, so why won't anyone here post claiming that they don't have a complaint with theirs?

Because that's just not how things work...

[Phosphorous]

Its the other way around, there are 10,000s of U3s out there and only a handful of complaints. There are more problems then Bitmain would like but its not as doomsday as you're portraying.

OK, so why won't anyone here post claiming that they don't have a complaint with theirs?

Because that's just not how things work...

Oh come on! If anyone has one that is working, you know they would post here and say so after seeing all of this dialog.

[Chris_Sabian]

Anyone having a group buy for the U3?

I would like 1 or 2 to play around with but I don't want to buy 20 or 5.

Prices from resellers are almost 2x the bitmain price.

[Helfred]

Hi to all,

I am new to this.

Have a U3 running directly to notebook, running - more or less - stable at 785@225.
Avg is ~56

Not really satisfying. Every 4 or 5 days it needs a hard reset. It really helps in this case if you reinstall zadig drivers.
Some times i think, most of the problems the U3 has is due to the usb drivers, but cannot proof that.

I am using cgminer 4.9.0 an a win7/32 bit notebook.

One more question: i always used Zadig and choosed the winsub driver.

Is choosing the libusb-win32 probably better ?
Someone tried this ?

[dogie]

Hi to all,

I am new to this.

Have a U3 running directly to notebook, running - more or less - stable at 785@225.
Avg is ~56

Not really satisfying. Every 4 or 5 days it needs a hard reset. It really helps in this case if you reinstall zadig drivers.
Some times i think, most of the problems the U3 has is due to the usb drivers, but cannot proof that.

I am using cgminer 4.9.0 an a win7/32 bit notebook.

One more question: i always used Zadig and choosed the winsub driver.

Is choosing the libusb-win32 probably better ?
Someone tried this ?

You need to Zadig for it to work. You may get long term stability on a powered USB hub.

[Helfred]

By the way: I noted that cgminer is showing the Antminer as

0:AU3:0 then after a time 1:AU3:1 ... and so on

Does someone know, what the number shows ?

[nicklello]

By the way: I noted that cgminer is showing the Antminer as

0:AU3:0 then after a time 1:AU3:1 ... and so on

Does someone know, what the number shows ?

I was getting exactly this problem (although the U3 is connected to a RPI rather than a laptop)

It turned out to be the cheap power supply that came with the U3 ; for me the solution was to take power off the ATX PSU that I have for other miners; there are several recommendations on better standalone power supplies in this thread,

[Helfred]

Yes, the chinese crap psu is probably one reason.

But do this numbers mean ? 0:AU3:0, 1:AU3:1 ...
It's a counter, beginning at 0, and then going up to 4 (in my case). When it's reached 4, the unit is hanging up.

Is it a temperature thing ?

[Helfred]

Have a look, what my cgminer shows.
I am talking about the status bar.

https://www.dropbox.com/s/5bi20j84die4v4i/Screenshot%202015-02-03%2007.26.08.png?dl=0

[BITMAIN_Kiddy]

Have a look, what my cgminer shows.
I am talking about the status bar.

https://www.dropbox.com/s/5bi20j84die4v4i/Screenshot%202015-02-03%2007.26.08.png?dl=0

Please try the latest cgminer from our official website.
https://www.bitmaintech.com/files/download/cgminer-run-windows-20150107.zip

[BITMAIN_Kiddy]

Yes, the chinese crap psu is probably one reason.

But do this numbers mean ? 0:AU3:0, 1:AU3:1 ...
It's a counter, beginning at 0, and then going up to 4 (in my case). When it's reached 4, the unit is hanging up.

Is it a temperature thing ?

The counter means the attempted times.

[Helfred]

Hi,
thanks for your support, btmain_kiddy

What do you think the usage of Bitmain-cgminer will improve ?
Better hashrate ? Improved stability ?

And what kind of attempts are meant by cgminer ?
Is my impression rightm, that when this counter reached '4' the au3 is quitting ?

Does this version support the - usb parm of the 4.9.0 version (I have one cgminerinstance for every usbport used running) ?

[Helfred]

Tried the latest Bitmain version, provided from Bitmain_Kiddy:

Some questions:

The AU3 is now recognized as "AMU"

With the parms provided in the autoexec.bat it hashes around 60 avg.
BUT: a lot, I mean a really lot of HW Errors

AMU0: invalid nonce - HW error

What does this mean

Probably I should change the parameters and go down with voltage and frequency ?

Have a look:
https://www.dropbox.com/s/lai4okp6qn6g819/Screenshot%202015-02-03%2012.11.05.png?dl=0

Opinions/help is very appreciated.
Probably these HW Errors are normal, but the 4.9.0 does not show them as a message and just counting them in the status bar ?

[Helfred]

After about half an hour, hashrate is declining to 50

https://www.dropbox.com/s/fvj0yau25jk7l3g/Screenshot%202015-02-03%2012.36.59.png?dl=0

Have a look...

Seems not helping in improving hashrate ?

Any tipps or hints ?

[nicklello]

After about half an hour, hashrate is declining to 50

https://www.dropbox.com/s/fvj0yau25jk7l3g/Screenshot%202015-02-03%2012.36.59.png?dl=0

Have a look...

Seems not helping in improving hashrate ?

Any tipps or hints ?

It would be interesting to find out what the differences are between the bitmain-flavour cgminer driver for the U3 and the official cgminer driver.

I've never had any luck using the 'official, bitmain' version of cgminer but am getting a good hashrate (most of the time) with the Official non-bitmain CGMiner.

*However* My U3 just dropped out after about 6 hours last night despite being powered through the (750Watt) ATX supply..  had to remove both Power and USB before it would play again.

Waiting for that to happen again to try and diagnose further.

[dogie]

What do you think the usage of Bitmain-cgminer will improve ?
Better hashrate ? Improved stability ?

Its a different development path, neither is necessarily an improvement over the other.

AMU0: invalid nonce - HW error. What does this mean

After about half an hour, hashrate is declining to 50

Both of these could be PSU related.

[drazha]

Any place where I can by 1 or 2 of these units intead of MOQ 20 as per BitMain's website?

[jackbox]

Any place where I can by 1 or 2 of these units intead of MOQ 20 as per BitMain's website?

I still have not seen an answer as to what happened to the five pack of these.

[Phosphorous]

After about half an hour, hashrate is declining to 50

https://www.dropbox.com/s/fvj0yau25jk7l3g/Screenshot%202015-02-03%2012.36.59.png?dl=0

Have a look...

Seems not helping in improving hashrate ?

Any tipps or hints ?

This is how they work, get used to it.
You can improve performance by cleaning the over-application of heatsink compound between the heatsink and the processors. This will keep the units from going ZOMBIE but you will still need to reset them every few days.

Also, the Bitmain CGMiner does not (as I recall) support non-Bitmain devices, so if you are trying to run additional miners at the same time, forget it.