ANTMINER U3 Discussion and Support Thread

[BITMAIN_Janet]

I am happy with 62

I read that going more than that starts to dramaticlly increase the wattage at the wall. currently it works out  slightly less than 1watt per 1gh/s (about 0.95watt @ 800mV). i have a watt-o-meter and my PC and the 2 U3 are draining 162watts 24/7 from which 40watts is the PC then 60watts x 2 from the other PSU

I had a duff one form the same guy I bought these two. I was lucky to find them cheap on amazon because I know if something went bad returns would be a simple.. and my hunch was correct. The second one was running 45ghs and there was nothing I could do to increase it. Returned and the 3rd one runs like the 1st. No problem at all.

24hour mark now broken and niether the fixer upper nor the stock one ZOMBIED... Interesting.

Please upgrade the latest firmware if it still can start to work..RMA is accepted if it is still working on 45G at below codes:

Code:

cgminer.exe  --bmsc-options 115200:0.54 -o stratum.antpool.com:3336 -u antminer_1 -o p2p.antpool.com:25 -u antminer_2 --bmsc-voltage 0830  --bmsc-freq 0982

[2n3906]

Well at about 35 hours I got the wonderful Zombie status. Guess I'll be giving up on the default setting and running with the 800mV for a bit.

[ppumkin]

Nearly 48 hours and still stable.

Stock and cleaned up. All I did with the stock is put a fan under the heatsink.

Both going well but now at 61.9gh/s instead of 62.5gh/s

[Visvas]

I am happy with 62

I read that going more than that starts to dramaticlly increase the wattage at the wall. currently it works out  slightly less than 1watt per 1gh/s (about 0.95watt @ 800mV). i have a watt-o-meter and my PC and the 2 U3 are draining 162watts 24/7 from which 40watts is the PC then 60watts x 2 from the other PSU

I had a duff one form the same guy I bought these two. I was lucky to find them cheap on amazon because I know if something went bad returns would be a simple.. and my hunch was correct. The second one was running 45ghs and there was nothing I could do to increase it. Returned and the 3rd one runs like the 1st. No problem at all.

24hour mark now broken and niether the fixer upper nor the stock one ZOMBIED... Interesting.

Please upgrade the latest firmware if it still can start to work..RMA is accepted if it is still working on 45G at below codes:

Code:

cgminer.exe  --bmsc-options 115200:0.54 -o stratum.antpool.com:3336 -u antminer_1 -o p2p.antpool.com:25 -u antminer_2 --bmsc-voltage 0830  --bmsc-freq 0982

cannot seem to find any firmware updates on the supportpages?

[dogie]

I am happy with 62

I read that going more than that starts to dramaticlly increase the wattage at the wall. currently it works out  slightly less than 1watt per 1gh/s (about 0.95watt @ 800mV). i have a watt-o-meter and my PC and the 2 U3 are draining 162watts 24/7 from which 40watts is the PC then 60watts x 2 from the other PSU

I had a duff one form the same guy I bought these two. I was lucky to find them cheap on amazon because I know if something went bad returns would be a simple.. and my hunch was correct. The second one was running 45ghs and there was nothing I could do to increase it. Returned and the 3rd one runs like the 1st. No problem at all.

24hour mark now broken and niether the fixer upper nor the stock one ZOMBIED... Interesting.

Please upgrade the latest firmware if it still can start to work..RMA is accepted if it is still working on 45G at below codes:

Code:

cgminer.exe  --bmsc-options 115200:0.54 -o stratum.antpool.com:3336 -u antminer_1 -o p2p.antpool.com:25 -u antminer_2 --bmsc-voltage 0830  --bmsc-freq 0982

cannot seem to find any firmware updates on the supportpages?

Its not on there yet (bumped for it to be uploaded), in the meantime I've mirrored it here because I already had a copy.

[Visvas]

Seems to work fine, although i do believe it now averages a bit lower than with the old version.

My second U3, which used to be the slowest, now works fine, averaging at 63 as i write. However, the other one is now just fu*** up. After a lot of reset, reinstall etc, cgminer now can address it, but only recieves errors back and cannot make use of it.


[2015-01-11 19:16:06] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE
[2015-01-11 19:16:06] AMU 4 attempted reset got err:(0) LIBUSB_SUCCESS
[2015-01-11 19:16:07] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE
[2015-01-11 19:16:07] AMU 4 attempted reset got err:(0) LIBUSB_SUCCESS
[2015-01-11 19:16:07] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE

And it goes on. With the last cgminer-run, i got different errors, unable to initalize, unable to set freq etc.

[dogie]

Seems to work fine, although i do believe it now averages a bit lower than with the old version.

My second U3, which used to be the slowest, now works fine, averaging at 63 as i write. However, the other one is now just fu*** up. After a lot of reset, reinstall etc, cgminer now can address it, but only recieves errors back and cannot make use of it.


[2015-01-11 19:16:06] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE
[2015-01-11 19:16:06] AMU 4 attempted reset got err:(0) LIBUSB_SUCCESS
[2015-01-11 19:16:07] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE
[2015-01-11 19:16:07] AMU 4 attempted reset got err:(0) LIBUSB_SUCCESS
[2015-01-11 19:16:07] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE

And it goes on. With the last cgminer-run, i got different errors, unable to initalize, unable to set freq etc.

Using a hub? Powered or unpowered?

[Visvas]

no hub, directly on the pc. Used to work well for a long time on that port, tried different ports as well. Tried both on the usb 2 and 3 ports.

[dogie]

no hub, directly on the pc. Used to work well for a long time on that port, tried different ports as well. Tried both on the usb 2 and 3 ports.

I would strongly advise putting them on a powered USB hub, especially with three.

[ppumkin]

Well unfortunately something went wrong with my test and both miners stopped mining. When I went to inspect the issue the PSU was off.. Nothing on the PSU was running. Not sure what happened, maybe the PSU is faulty.

I will try another power supply if I can but I can confirm it was running at least 36 hours.

@irobb how is your looking? Still going?

[Visvas]

With a new cable, not the one included, it seemed to work again for a while. There's two connected, to two different USB buses, but i'll look into the the powered usb advise too.

After a while however, i got this:


[2015-01-11 20:59:14] AMU0: invalid nonce - HW error
[2015-01-11 21:15:01] AMU0: invalid nonce - HW error
[2015-01-11 22:12:15] AMU 7 SendWork usb write err:(-1) LIBUSB_ERROR_IO
[2015-01-11 22:12:15] AMU 7 attempted reset got err:(0) LIBUSB_SUCCESS


Then the now troublesome unit zombied. Got it up again briefly after some reset/un/re-plugs. Then it just zombied again.

[ppumkin]

With a new cable, not the one included, it seemed to work again for a while. There's two connected, to two different USB buses, but i'll look into the the powered usb advise too.

After a while however, i got this:


[2015-01-11 20:59:14] AMU0: invalid nonce - HW error
[2015-01-11 21:15:01] AMU0: invalid nonce - HW error
[2015-01-11 22:12:15] AMU 7 SendWork usb write err:(-1) LIBUSB_ERROR_IO
[2015-01-11 22:12:15] AMU 7 attempted reset got err:(0) LIBUSB_SUCCESS


Then the now troublesome unit zombied. Got it up again briefly after some reset/un/re-plugs. Then it just zombied again.

AMU ? It doesnt seem to be detecting the U3 properly. It should be saying AU3.  Are you using cgminer 4.9.0 with out any settings to test. Also the USB should be as short as possible, long ones seem to have issues.

I have 2 running with 2 short USB cables that I bought seperatly. I had the same errors as yours with the stock cable and then some other longer cable. I suspect its voltage related.

[irobb]

Well unfortunately something went wrong with my test and both miners stopped mining. When I went to inspect the issue the PSU was off.. Nothing on the PSU was running. Not sure what happened, maybe the PSU is faulty.

I will try another power supply if I can but I can confirm it was running at least 36 hours.

@irobb how is your looking? Still going?

Still running with no zombies. If I can find one cheaper than I got off Amazon I will get another since I'll be returning this unit this week.

[-ck]

AMU ? It doesnt seem to be detecting the U3 properly. It should be saying AU3.  Are you using cgminer 4.9.0 with out any settings to test.

Bitmain continues to distribute its own binaries ignoring any development I put into mainline cgminer so their driver still uses a different driver name, trashes other icarus drivers, needs lots of weird command line options to get working etc. So people using their binary get devices as AMU.

[dogie]

With a new cable, not the one included, it seemed to work again for a while. There's two connected, to two different USB buses, but i'll look into the the powered usb advise too.

After a while however, i got this:


[2015-01-11 20:59:14] AMU0: invalid nonce - HW error
[2015-01-11 21:15:01] AMU0: invalid nonce - HW error
[2015-01-11 22:12:15] AMU 7 SendWork usb write err:(-1) LIBUSB_ERROR_IO
[2015-01-11 22:12:15] AMU 7 attempted reset got err:(0) LIBUSB_SUCCESS


Then the now troublesome unit zombied. Got it up again briefly after some reset/un/re-plugs. Then it just zombied again.

Yes please, see how it is on a powered USB hub. Those LIBUSB errors nearly always disappear when you add in a hub.

[bearda]

Has anyone experienced problems with the Antminer U3 starting to "scream" all the sudden? Every once and a while (sometimes a few hours after plugging it in, sometimes a day or two) it starts making a repeated high pitched alarm type noise and stops mining entirely.  The only way to reset it seem to be to unplug it from both power and USB. 

I'm really considering trying a return through Amazon.

[irobb]

Yes, has happened to me a number of times.  It stopped happening once the adapter melted and I started to use better supply of voltage (i.e, my PSU).

[mindtrip]

Yes, has happened to me a number of times.  It stopped happening once the adapter melted and I started to use better supply of voltage (i.e, my PSU).

these things come with an underpowered PSU out of the box and horribly written drivers as mentioned above. Advice to all first step is toss the brick and connect it to a real PSU, i haven't cracked mine open yet but I would also get the thermal paste is poorly applied, finally id make sure your running the latest version of cgminer or the latest version posted on bitmain's website (I haven't tested that one yet myself)

[Phosphorous]

Well unfortunately something went wrong with my test and both miners stopped mining. When I went to inspect the issue the PSU was off.. Nothing on the PSU was running. Not sure what happened, maybe the PSU is faulty.

I will try another power supply if I can but I can confirm it was running at least 36 hours.

@irobb how is your looking? Still going?

Still running with no zombies. If I can find one cheaper than I got off Amazon I will get another since I'll be returning this unit this week.

Why are you returning if you got it to work without going ZOMBIE?

[Phosphorous]

I am happy with 62

I read that going more than that starts to dramaticlly increase the wattage at the wall. currently it works out  slightly less than 1watt per 1gh/s (about 0.95watt @ 800mV). i have a watt-o-meter and my PC and the 2 U3 are draining 162watts 24/7 from which 40watts is the PC then 60watts x 2 from the other PSU

I had a duff one form the same guy I bought these two. I was lucky to find them cheap on amazon because I know if something went bad returns would be a simple.. and my hunch was correct. The second one was running 45ghs and there was nothing I could do to increase it. Returned and the 3rd one runs like the 1st. No problem at all.

24hour mark now broken and niether the fixer upper nor the stock one ZOMBIED... Interesting.

Please upgrade the latest firmware if it still can start to work..RMA is accepted if it is still working on 45G at below codes:

Code:

cgminer.exe  --bmsc-options 115200:0.54 -o stratum.antpool.com:3336 -u antminer_1 -o p2p.antpool.com:25 -u antminer_2 --bmsc-voltage 0830  --bmsc-freq 0982

cannot seem to find any firmware updates on the supportpages?

Its not on there yet (bumped for it to be uploaded), in the meantime I've mirrored it here because I already had a copy.

How do you update the firmware on these U3's?