[Guide] Dogie's Comprehensive Bitmain AntMiner S2 Setup [HD]

[dogie]

This is the network setting.

And the other one? And is that IP sensible for where you are at? Mine is 192.168.1.100 for example.

[midyatspor]

I just got my S2 but for some reason it's not hashing when I change the Pool Setting but When I reset the machine to original factory settings it starts hashing automatically with the factory pool settings, any idea why, I tried to set it up like the S1 but as soon as I change the pool setting it will not hash.

any help would be appreciated.

[midyatspor]

I just got my S2 but for some reason it's not hashing when I change the Pool Setting but When I reset the machine to original factory settings it starts hashing automatically with the factory pool settings, any idea why, I tried to set it up like the S1 but as soon as I change the pool setting it will not hash.

any help would be appreciated.

Figured it out, looks like all 3 pool settings need to be put in with the http: prefix.

[dogie]

I just got my S2 but for some reason it's not hashing when I change the Pool Setting but When I reset the machine to original factory settings it starts hashing automatically with the factory pool settings, any idea why, I tried to set it up like the S1 but as soon as I change the pool setting it will not hash.

any help would be appreciated.

Figured it out, looks like all 3 pool settings need to be put in with the http: prefix.

Which is exactly why I asked the other two for screenshots Everyone thinks they put it in right, but different miners have different formating requirements.

[midyatspor]

I just got my S2 but for some reason it's not hashing when I change the Pool Setting but When I reset the machine to original factory settings it starts hashing automatically with the factory pool settings, any idea why, I tried to set it up like the S1 but as soon as I change the pool setting it will not hash.

any help would be appreciated.

Figured it out, looks like all 3 pool settings need to be put in with the http: prefix.

Which is exactly why I asked the other two for screenshots Everyone thinks they put it in right, but different miners have different formating requirements.

Agreed. Also, looks like Bitmain sent me a 220V power plug, is it ok to use a standard computer power plug with this machine, on the cable it says UL 9vt e49100 60 deg C vw-1 3X18AWG, when I hold the cable and plug it's warm, it's drawing most likely around 10A.

[dogie]

I just got my S2 but for some reason it's not hashing when I change the Pool Setting but When I reset the machine to original factory settings it starts hashing automatically with the factory pool settings, any idea why, I tried to set it up like the S1 but as soon as I change the pool setting it will not hash.

any help would be appreciated.

Figured it out, looks like all 3 pool settings need to be put in with the http: prefix.

Which is exactly why I asked the other two for screenshots Everyone thinks they put it in right, but different miners have different formating requirements.

Agreed. Also, looks like Bitmain sent me a 220V power plug, is it ok to use a standard computer power plug with this machine, on the cable it says UL 9vt e49100 60 deg C vw-1 3X18AWG, when I hold the cable and plug it's warm, it's drawing most likely around 10A.

Not sure on that, wasn't aware cables had a voltage rating? 10A is fine for one of those cables if they're rating 13A. It will be warm, but they're fine up to 60C.

[midyatspor]

I just got my S2 but for some reason it's not hashing when I change the Pool Setting but When I reset the machine to original factory settings it starts hashing automatically with the factory pool settings, any idea why, I tried to set it up like the S1 but as soon as I change the pool setting it will not hash.

any help would be appreciated.

Figured it out, looks like all 3 pool settings need to be put in with the http: prefix.

Which is exactly why I asked the other two for screenshots Everyone thinks they put it in right, but different miners have different formating requirements.

Agreed. Also, looks like Bitmain sent me a 220V power plug, is it ok to use a standard computer power plug with this machine, on the cable it says UL 9vt e49100 60 deg C vw-1 3X18AWG, when I hold the cable and plug it's warm, it's drawing most likely around 10A.

Not sure on that, wasn't aware cables had a voltage rating? 10A is fine for one of those cables if they're rating 13A. It will be warm, but they're fine up to 60C.

sorry, should have been more clear, what I meant was Bitmain did not send me US 120V Plug, the power cord he sent me is a 220V plug, https://www.dropbox.com/s/lpudqeve8xpuffg/Photo%20May%2028%2C%208%2049%2056%20PM.jpg

[Biodom]

Anybody can help with what I see on my S2 unit? To me it looks like one slot is dead, which is very strange. I tried to switch boards and it did not help, eliminating the board problem. What else could it be but the slot problem?
In additon-a silly question. Where did LOGOUT go on the web gui?
I also tried to reboot miner from the web gui and it did not work properly either, the machine got stuck, had to manually restart.
I wonder why what work so nicely in S1 is not working as well as it did before (rhetorical question).

[dogie]

This is a different controller mechanism. Take a good luck inside the slot and see if you can see any debris or loose pins. Its unlikely but worth a shot.

[Biodom]

This is a different controller mechanism. Take a good luck inside the slot and see if you can see any debris or loose pins. Its unlikely but worth a shot.

Thanks, no, no debris or visibly misaligned or loose pins. I even tried to vacuum with a small handheld-nothing. I am wondering whether to continue at 90% or send back the miner and lose a week (if all goes well). Phillip on the main S2 board suggested that it might not draw enough power somehow on slot 1. is this possible? I can check it, but as always, tough to do this when hashing is going on.

[dogie]

This is a different controller mechanism. Take a good luck inside the slot and see if you can see any debris or loose pins. Its unlikely but worth a shot.

Thanks, no, no debris or visibly misaligned or loose pins. I even tried to vacuum with a small handheld-nothing. I am wondering whether to continue at 90% or send back the miner and lose a week (if all goes well). Phillip on the main S2 board suggested that it might not draw enough power somehow on slot 1. is this possible? I can check it, but as always, tough to do this when hashing is going on.

Yes its possible as it looks like its more than just the comms pins which are dead. You can ask them to send you an S1 as a replacement.

[fresca]

I got my antminer up and running!  Feels good to struggle through the setup a little bit and now have it working.  Does the discarded usually reach this amount?  And how important are the updates?

[NotFuzzyWarm]

I just got my S2 but for some reason it's not hashing when I change the Pool Setting but When I reset the machine to original factory settings it starts hashing automatically with the factory pool settings, any idea why, I tried to set it up like the S1 but as soon as I change the pool setting it will not hash.

any help would be appreciated.

Figured it out, looks like all 3 pool settings need to be put in with the http: prefix.

Which is exactly why I asked the other two for screenshots Everyone thinks they put it in right, but different miners have different formating requirements.

Agreed. Also, looks like Bitmain sent me a 220V power plug, is it ok to use a standard computer power plug with this machine, on the cable it says UL 9vt e49100 60 deg C vw-1 3X18AWG, when I hold the cable and plug it's warm, it's drawing most likely around 10A.

Mine came with the crows foot plug as well.
Running with a 18ga cord not good idea. Max current for most 18ga cords is 10a which is why it is getting warm. Also means that to some extent the psu is not getting all your line can provide making the psu work harder/pull more current from the wall.

I got a couple of these 16ga cords from Mcmaster http://www.mcmaster.com/#71535K56 good for 13amps.

[Biodom]

A stupid question:

I don't see any logout tab on antminer S2 gui as there is one on S1.

So, how do you logout from S2?

[midyatspor]

I just got my S2 but for some reason it's not hashing when I change the Pool Setting but When I reset the machine to original factory settings it starts hashing automatically with the factory pool settings, any idea why, I tried to set it up like the S1 but as soon as I change the pool setting it will not hash.

any help would be appreciated.

Figured it out, looks like all 3 pool settings need to be put in with the http: prefix.

Which is exactly why I asked the other two for screenshots Everyone thinks they put it in right, but different miners have different formating requirements.

Agreed. Also, looks like Bitmain sent me a 220V power plug, is it ok to use a standard computer power plug with this machine, on the cable it says UL 9vt e49100 60 deg C vw-1 3X18AWG, when I hold the cable and plug it's warm, it's drawing most likely around 10A.

Mine came with the crows foot plug as well.
Running with a 18ga cord not good idea. Max current for most 18ga cords is 10a which is why it is getting warm. Also means that to some extent the psu is not getting all your line can provide making the psu work harder/pull more current from the wall.

I got a couple of these 16ga cords from Mcmaster http://www.mcmaster.com/#71535K56 good for 13amps.

Thanx for the input, I had a 16ga 13A cord, changed it already.

[kano]

so is there a solution to all the rejected rates peple are getting?

Is there a way to sort of staalize it to send more accepted shares that dont get rejected?

thanks!

Whats happening with yours? Upload a screenshot of status please.

Here are 2 screensshots, if you can figure out what I can do to get this improved that would be very helpful.

Thanks!

https://i.imgur.com/Jms9lGx.jpg
https://i.imgur.com/rLUKlly.jpg

Discarded is fine, those are difficulty ONE discard shares you're comparing against difficulty 1024 shares. Compare discards against DiffA.

Incorrect.

That is not what discarded is.

The number you seem to be describing is the value shown at DiffR
You have a few similar incorrect posts in this thread.

His rejected shares is high ... 33% ...
That, I imagine, would piss off any pool operator who saw it, having to do 1.5x the CPU work necessary checking shares.
However, his pool accept rate is ok 979.6GH/s

The reject rate is high due to the fact that the bitmain S2 driver sux.
It passes shares below difficulty to the pool rather than to verify they are valid shares.
How bad that is, will depend on the pool requested difficulty.
The S2 mines at a difficulty of 2^N where N is the highest integer value that gives a value below the required difficulty.
Thus all shares generated with a difficulty below required but above 2^N will be sent to the pool and rejected.

Edit: I do already have a working replacement S2 firmware I've made with fixes and and current cgminer but I'm still in discussion with bitmain directly trying to get the SPI driver code so I can fix that also.
My BlackArrow Prospero SPI driver can do > 3TH/s when it maxes out CPU on an RPi ... it's a pity that the S2 maxes out CPU on a faster BeagleBone Black below 1TH/s ...

[PatMan]

Edit: I do already have a working replacement S2 firmware I've made with fixes and and current cgminer but I'm still in discussion with bitmain directly trying to get the SPI driver code so I can fix that also.
My BlackArrow Prospero SPI driver can do > 3TH/s when it maxes out CPU on an RPi ... it's a pity that the S2 maxes out CPU on a faster BeagleBone Black below 1TH/s ...

Fair play to ya Kano - just hope Bitmain pull their finger out & hurry up with your request. I'll never understand why hardware manufacturers don't contact software devs when building their stuff, it would save so much hassle for the end user, the software devs & them if they did 

Peace.

[TracerX]

Edit: I do already have a working replacement S2 firmware I've made with fixes and and current cgminer but I'm still in discussion with bitmain directly trying to get the SPI driver code so I can fix that also.
My BlackArrow Prospero SPI driver can do > 3TH/s when it maxes out CPU on an RPi ... it's a pity that the S2 maxes out CPU on a faster BeagleBone Black below 1TH/s ...

Thanks for the effort, Kano.  I look forward to an updated firmware for the S2, and will allocate some funds your direction when it becomes available.

Cheers.

[ak49er]

Anyone have any idea as to why my S2 is reporting zero as the BestShare?

Received the miner last night.  Usual case of boards all over the place.  Pulled everything out.  Checked all cables.  Reseated all boards.  Fired it up and configured it.  It's been hashing perfectly all night.  Right around the 1000GH/s mark, 53C, posting shares to BTCGuild as would be expected.  Just zero BestShare value.  Not that I'm concerned about this.  I'm getting paid for the shares I am submitting.  Just curious.

Thanks!

[Biodom]

Anyone have any idea as to why my S2 is reporting zero as the BestShare?

 I'm getting paid for the shares I am submitting.

Thanks!

My pool shows 6 times less btc than I expected and also shows 20% shares accepted. When the machine first started (~24 hours ago) it was at 100% accepted. Is this pool's fault or machine? Any help would be appreciated. Machine shows that it is hashing at semi-normal speed (i have only 9 out of 10 boards functional).