ANTMINER S2 Discussion and Support Thread

[Biodom]

can someone tell me please what a reasonable ratio of discarded shares in the miner status summary for the S2 would be. As my S1's show an accepted amount of a lot higher than the discarded number but my new S2 is showing the discarded as being vastly higher that the accepted.

Elapsed    GH/S(5s)    GH/S(avg)    FoundBlocks    Getworks    Accepted    Rejected    HW    Utility    Discarded
15m16s      882.50       1011.66          0                    44            195             3           193    12.78          21164
   
Stale    LocalWork    WU            DiffA         DiffR    DiffS    BestShare
0               278515    14132.68    199680    3072      0       0
   


and with a best share of 0 is it actually mining??

You cutoff your difficulty. Assuming that it is 1024, accepted is actually 1024X195=~200K. You have to look for longer than 15min, but your WU is OK (~14K)
Use eligius pool, don't use btcguild (at least on my S2 btcguild did not work well). best share is not being calculated on many S2, just check your pool for stats.

[nzgrant]

Thanks for that Biodom diff is 1024
I was a bit concerned

[taipo]

I have two S2 coupons to donate that expire on 2014-06-12, PM me for them.

One coupon left to donate.

Gone.

[gigacoiner]

Just got the S2.  Is this the symptom of a bad power supply?
If I have more than 5 boards running, the miner would start and when the screen goes to Antminer and starts hashing, it would last for only a few seconds and turn off.  If I have only 5 boards in there, it would be hashing fine, and the pool stats show that it's hashing around 500.

[xstr8guy]

Just got the S2.  Is this the symptom of a bad power supply?
If I have more than 5 boards running, the miner would start and when the screen goes to Antminer and starts hashing, it would last for only a few seconds and turn off.  If I have only 5 boards in there, it would be hashing fine, and the pool stats show that it's hashing around 500.

Get a good Gold or Platinum 1200w or greater PSU and swap out that underpowered garbage Enermax.

[PhilippeD]

Just got the S2.  Is this the symptom of a bad power supply?
If I have more than 5 boards running, the miner would start and when the screen goes to Antminer and starts hashing, it would last for only a few seconds and turn off.  If I have only 5 boards in there, it would be hashing fine, and the pool stats show that it's hashing around 500.

Get a good Gold or Platinum 1200w or greater PSU and swap out that underpowered garbage Enermax.

No problem with my Enermax, all 10 blades work very well at about 980 Gh/s on pool cex.io.

cex.io screenshot :


S2 screenshot :


INFO :
Sell two S2 coupons, 0.05 BTC per coupon. please send me a message if you need one.

[BITMAIN]

New price for AntMiner S2 1 TH/s Kit: 2147 USD each one, shipping cost included.

[BITMAIN]

New price for AntMiner S2 1 TH/s Miner Batch 4: 2309 USD each one, shipping cost included.

[nottm28]

Got my S2s today after a seemingly long journey from China. Opened the lid on the first one with some dread - everything was good.

Plugged it in and it just worked - straight to 1TH/s (slightly over).

Didn't even bother removing the lid on the second one, plugged it in and it just worked - straight to 1TH/s again.

Took me all of 11 minutes to get them both mining.

I've got to hand it to bitmain - he's certainly addressed the problems reported in earlier batches.

Customs fee in UK was £241 per unit btw.

Happy customer!

[TracerX]

Didn't even bother removing the lid on the second one, plugged it in and it just worked - straight to 1TH/s again.

Awesome!  You should probably crack the lid on the second, just to make sure the cards are in good.  Right?

[Biodom]

Just got the S2.  Is this the symptom of a bad power supply?
If I have more than 5 boards running, the miner would start and when the screen goes to Antminer and starts hashing, it would last for only a few seconds and turn off.  If I have only 5 boards in there, it would be hashing fine, and the pool stats show that it's hashing around 500.

Get a good Gold or Platinum 1200w or greater PSU and swap out that underpowered garbage Enermax.

No problem with my Enermax, all 10 blades work very well at about 980 Gh/s on pool cex.io.

cex.io screenshot :


S2 screenshot :
http://img4.hostingpics.net/pics/650716cex2.jpg

Could you and all reasonable people please stop using cex.io/ghash.io or all your (and mine) bitcoins will turn into pumpkins-use Eligius or anything else for crying out loud

[nottm28]

Didn't even bother removing the lid on the second one, plugged it in and it just worked - straight to 1TH/s again.

Awesome!  You should probably crack the lid on the second, just to make sure the cards are in good.  Right?

That's the thing - there's a big metal plate above the cards - they can't come out unless you remove the plate. It felt like I was unpacking an S1 - cardboard box was a bit battered, but inside, the foam was holding the unit very secure. And inside the unit itself - everything is now bolted down big time.

[nottm28]

Could you and all reasonable people please stop using cex.io/ghash.io or all your (and mine) bitcoins will turn into pumpkins-use Eligius or anything else for crying out loud

+1 switched everything back to good old slush puppy a couple of weeks ago

[PhilippeD]

Just got the S2.  Is this the symptom of a bad power supply?
If I have more than 5 boards running, the miner would start and when the screen goes to Antminer and starts hashing, it would last for only a few seconds and turn off.  If I have only 5 boards in there, it would be hashing fine, and the pool stats show that it's hashing around 500.

Get a good Gold or Platinum 1200w or greater PSU and swap out that underpowered garbage Enermax.

No problem with my Enermax, all 10 blades work very well at about 980 Gh/s on pool cex.io.

cex.io screenshot :


S2 screenshot :
http://img4.hostingpics.net/pics/650716cex2.jpg

Could you and all reasonable people please stop using cex.io/ghash.io or all your (and mine) bitcoins will turn into pumpkins-use Eligius or anything else for crying out loud

I don't understand why you tell me not use cex.io/ghash.io ?

Can you explain me what is the problem with cex.io/ghash.io please ?

Best regards

[Airwhale]

Hey guys,

I have half a dozen S2 coupons which expire on the 12th.  Happy to let them go for .01 btc or whatever you all think is fair.  If you are hard up,  feel free to PM me anyway,  I'll donate one to you for nothin.

Shaun

[mdude77]

I don't understand why you tell me not use cex.io/ghash.io ?

Can you explain me what is the problem with cex.io/ghash.io please ?

They are the biggest pool out there, and most of it (I believe) is their own hardware.  They get way too much of the hash rate percentage for it to be beneficial to bitcoin.

M

[ChuckBuck]

Just got the S2.  Is this the symptom of a bad power supply?
If I have more than 5 boards running, the miner would start and when the screen goes to Antminer and starts hashing, it would last for only a few seconds and turn off.  If I have only 5 boards in there, it would be hashing fine, and the pool stats show that it's hashing around 500.

Get a good Gold or Platinum 1200w or greater PSU and swap out that underpowered garbage Enermax.

No problem with my Enermax, all 10 blades work very well at about 980 Gh/s on pool cex.io.

cex.io screenshot :


S2 screenshot :
http://img4.hostingpics.net/pics/650716cex2.jpg

Could you and all reasonable people please stop using cex.io/ghash.io or all your (and mine) bitcoins will turn into pumpkins-use Eligius or anything else for crying out loud

I don't understand why you tell me not use cex.io/ghash.io ?

Can you explain me what is the problem with cex.io/ghash.io please ?

Best regards

Yes, please get off GHash.io immediately. 

Have you heard of a "51% attack".  Well GHash reached 48% today, so do your part for the Bitcoin network and mine on Eligius, BTCGuild, or Slush's pool instead.

[dlowings]

Just got the S2.  Is this the symptom of a bad power supply?
If I have more than 5 boards running, the miner would start and when the screen goes to Antminer and starts hashing, it would last for only a few seconds and turn off.  If I have only 5 boards in there, it would be hashing fine, and the pool stats show that it's hashing around 500.

Get a good Gold or Platinum 1200w or greater PSU and swap out that underpowered garbage Enermax.

No problem with my Enermax, all 10 blades work very well at about 980 Gh/s on pool cex.io.

cex.io screenshot :


S2 screenshot :
http://img4.hostingpics.net/pics/650716cex2.jpg

Could you and all reasonable people please stop using cex.io/ghash.io or all your (and mine) bitcoins will turn into pumpkins-use Eligius or anything else for crying out loud

I don't understand why you tell me not use cex.io/ghash.io ?

Can you explain me what is the problem with cex.io/ghash.io please ?

Best regards

Yes, please get off GHash.io immediately. 

Have you heard of a "51% attack".  Well GHash reached 48% today, so do your part for the Bitcoin network and mine on Eligius, BTCGuild, or Slush's pool instead.

I agree 100% and they sent out spam email today trying to pull in more members… they are not good for Bitcoin IMO , and ill keep my stuff away from there until they are back in the high 30's …

[masonbtc]

Received my 2nd S2 today, and it's behaving kinda strange.  For one, one of the temperature sensors is reading 127 constantly.  It never changes, always 127.  I'm thinking it must be glitched, every other one reads between 48-51.  Also, all four fan speeds read "0", even though the fans are running...  And finally, every time I power off the machine, it resets back to factory settings!  Kind of annoying to have to go back and switch it back to DHCP every time i reboot it, especially when my home network is not 192.168.x.x..

Any ideas?  I have one other S2 which worked flawlessly within minutes of receiving it so I'm not sure how to go about getting some tech support.  I'm currently reading through the manual to see if any of these issues are addressed...

[edgar]

Didn't even bother removing the lid on the second one, plugged it in and it just worked - straight to 1TH/s again.

Awesome!  You should probably crack the lid on the second, just to make sure the cards are in good.  Right?

That's the thing - there should be a big metal plate above the cards - they can't come out unless you remove the plate (or bitmain ships you a rig without a plate or foam protection). It felt like I was unpacking an S1 - cardboard box was a bit battered, but inside, the foam was holding the unit very secure. And inside the unit itself - everything is now bolted down big time.

FTFY.


my last one rattled like a broken mirror upon delivery - which took nearly 2 weeks.

still waiting on RMA'd replacement board, capacitors & adequate thermal paste.