ANTMINER U3 Discussion and Support Thread

[hookthem]

CGMiner 4.9.2 is working very well for me on win 8 laptop with 2 U3's and several other USBs into two powered USB hubs.

Does anyone know of a way to fix zombie U3's without physically unpluggin/replugging?  I'm about to go out of town for a week and I'm not sure how I'm going to be able to start them back up.  I can VPN and access the host machine remotely...  Thoughts?

[Mikestang]

Does anyone know of a way to fix zombie U3's without physically unpluggin/replugging?  I'm about to go out of town for a week and I'm not sure how I'm going to be able to start them back up.  I can VPN and access the host machine remotely...  Thoughts?

You can try quitting cgminer and restarting via VPN, but I think you may have to physically unplug/plug them to clear ZOMBIE.

[TheRealSteve]

If you were horribly bored, had more time, and felt like throwing money at a problem that shouldn't exist in the first place... you could put something together with a powerswitch tail or other computer-controllable power strip, a switchdoc labs USB power control board, a generic USB GPIO thing, and appropriate software to effectively unplug the USB (cutting power on the USB end), unplugging the power cord (cutting power on the mains power strip), and re-plugging them.

[hookthem]

If you were horribly bored, had more time, and felt like throwing money at a problem that shouldn't exist in the first place... you could put something together with a powerswitch tail or other computer-controllable power strip, a switchdoc labs USB power control board, a generic USB GPIO thing, and appropriate software to effectively unplug the USB (cutting power on the USB end), unplugging the power cord (cutting power on the mains power strip), and re-plugging them.

I will be implementing something like this when I return from vacation.  Just didn't have enough time to put something together/order parts.

[TheRealSteve]

Before you do the USB power gadgedgadget, check if your USB controller's energy policies allow disabling/enabling (without falling flat on its face and not getting up again until after a reboot).

[NOVACAINE]

Does anyone have any idea why CG miner wont recognize my U3? I  am using CG 4.9.1 and I did replace the drives with Zadig. The device is showing up when I look up devices on windows 7. If I use my little 2.6 ghs yellow jacket it works fine.Any ideas would be appreciated.

[TheRealSteve]

Does anyone have any idea why CG miner wont recognize my U3? I  am using CG 4.9.1

Try 4.9.2 - it's got improved code for the U3.. though 4.9.1 should still recognize it, iirc.  You did unplug/replug after the Zadig driver replacement, right?

[Mikestang]

Does anyone have any idea why CG miner wont recognize my U3? I  am using CG 4.9.1

Try 4.9.2 - it's got improved code for the U3.. though 4.9.1 should still recognize it, iirc.  You did unplug/replug after the Zadig driver replacement, right?

4.9.1 will NOT recognize the U3, it is/was a known bug.  Use 4.9.2.

[TheRealSteve]

Does anyone have any idea why CG miner wont recognize my U3? I  am using CG 4.9.1

Try 4.9.2 - it's got improved code for the U3.. though 4.9.1 should still recognize it, iirc.  You did unplug/replug after the Zadig driver replacement, right?

4.9.1 will NOT recognize the U3, it is/was a known bug.  Use 4.9.2.

Ah, I thought 4.9.1 was just making them freak out and go BRAAAAAAIIIIIIINS even more often than usual   4.9.2 it is, then

[wlefever]

Does anyone have any idea why CG miner wont recognize my U3? I  am using CG 4.9.1

Try 4.9.2 - it's got improved code for the U3.. though 4.9.1 should still recognize it, iirc.  You did unplug/replug after the Zadig driver replacement, right?

4.9.1 will NOT recognize the U3, it is/was a known bug.  Use 4.9.2.

Guess I could pull my US out the trash and try 4.9.2 then

[Mikestang]

Guess I could pull my US out the trash and try 4.9.2 then

I was about to sell my U3s on ebay, but now I'm saving them for this: https://bitcointalk.org/index.php?topic=995675.msg11874028#msg11874028

[wlefever]

Guess I could pull my US out the trash and try 4.9.2 then

I was about to sell my U3s on ebay, but now I'm saving them for this: https://bitcointalk.org/index.php?topic=995675.msg11874028#msg11874028

Yeah I'm looking forward to that. I hope he gets a working board for the old rbox as well. I have 4 of those sitting in a closet.

[_kai_]

I'm using 4.9.2 on my windows 7 x64 pc and it's running 2x U3 stable with these settings... in case it's a help to anyone.
Avg 115 gh/s.

cgminer.exe -o stratum+tcp://blah.blah.blah -u my.name --au3-freq 240 --au3-volt 790

(One would run fine on 775, the other needed more juice to work reliably. 800 caused zombie.)

I have each U3 on a separate motherboard-usb-hub (they're stacked 4 high, I have them in the 2nd and 4th holes).

YMMV.


Edit: Must be a dodgy U3, even after all the fiddling, it sits at about 30Gh/s. Whereas its friend is 65+.

[Phosphorous]

If you were horribly bored, had more time, and felt like throwing money at a problem that shouldn't exist in the first place... you could put something together with a powerswitch tail or other computer-controllable power strip, a switchdoc labs USB power control board, a generic USB GPIO thing, and appropriate software to effectively unplug the USB (cutting power on the USB end), unplugging the power cord (cutting power on the mains power strip), and re-plugging them.

Or you could use something like this:
http://www.amazon.com/Minuteman-2-outlet-IP-Addressable-PDU-RPM-1521/dp/B002C9OMFQ
I didn't bother to shop and see if there is anything cheaper but I'm sure there is.

[TheRealSteve]

Or you could use something like this:
http://www.amazon.com/Minuteman-2-outlet-IP-Addressable-PDU-RPM-1521/dp/B002C9OMFQ
I didn't bother to shop and see if there is anything cheaper but I'm sure there is.

That would be the equivalent of the powerswitch tail: http://www.powerswitchtail.com/Pages/default.aspx
( and yes, there's cheaper - not sure I'd want to go the supercheap route for things like this, though )

However, the problem is that you also need to disconnect USB;

The communication chip needs to be power cycled because it stops responding. Even power cycling the device doesn't work because the comms chip draws power from the usb coming from your pc while the device is off.

Which means either a little device like I mentioned, or have the entire computer shut down and enable wake-on-lan or somesuch to get it back up again.

It's still throwing money at a losing proposition though.  I like small miners, my sig even says FUN > ROI for small StickMiners.. but the U3 wasn't much fun.  At least the first batch was aesthetically pleasing, but that got killed off in the second batch.

[notabeliever]

If you are having problem with your U3, please PM us. 

or you can return the U3 to the following address in the original box, and the replacement will be send to you from the factory

Bitmain Warranty
3700 Quebec St.
Unit 100-239
Denver, Colorado 80207

tel; +1-844-248-6246

Please include the purchase receipt from where you purchased it from.

When I run my miner, it only mines for a brief amount of time then shows ZOMBIE


What can I do to fix this?

[jmintuck02]

i have had best luck with this command about 45GH/s but not even close to 63GH/s as advertised "hassle free setup" not really
cgminer.exe --bmsc-options 115200:1 -o stratum+tcp://us1.ghash.io:3333 -u user -p password --bmsc-voltage 0750 --bmsc-freq 0882

can anyone let me know how to mine with multiple u3 in the same cgminer

That WORKED!! tHANK YOU. I tryed that and IT WORKED! I can't thank you enough. Now to find a higher power brick from somewhere and try another one.

[isch]

Hey there.
I just bought 2 Antminer U3 to get in this topic "Bitcoin mining".

At the moment i'm running them on my desktop pc, just to figure out how it works.
After that i plan to run them on a raspberry pi.

But i've some problems with the GH/s.
One of them goes with ~55.. not the best but for the first i'm ok with that.
But the other guy only goes with ~15-20.
What's the problem with him?

They're running on USB 3.0 withount any hub, the standart psu (that thing they're delivered with) and cgminer 4.9.0. I've also tried version 4.8.0 - the same.
I've changed the USB Ports and the PSU to figure out if there is maybe a problem. But it's allways the same Unit who works so low.
Just when i start cgminer both work with the same speed, but after a few minutes one guy goes down.

http://www.bilder-upload.eu/thumb/29fd54-1438420541.jpg

edit: tried out version 4.9.2 - looks like the problem is solved!

[stonehedge]

It has taken me about three days of trial and error but I have finally managed to get 3 Antminer U3s running on a raspberry Pi B (1st Gen) with powered USB hub using minera at 177Ghs with a HW error rate of 0%.

My U3s came with 7.5A power supplies and to cut a long story short all my problems ended when I stopped trying to use cgminer and bmsc options and used bfgminer with the following command line

-S antminer:all --set antminer:voltage=x820 --set antminer:clock=x0982

Power supplies and U3s are running at reasonable temperatures too.  Lets see how long this lasts for

EDITED for better results.

[Mikestang]

ended when I stopped trying to use cgminer and bmsc options

If you were using bmsc options with cgminer then you were using an old, outdated version of cgminer.  You should try again with version 4.9.2 and the proper --au3 command line options from the ASIC README (volt 800 and freq 250 usually give about the max rated GH/s).

and used bfgminer with the following command line

-S antminer:all --set antminer:voltage=x820 --set antminer:clock=x0982

Do you use --set antminer:timing as well, or omit it entirely from your command line?