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Topic: ANTMINER S2 Discussion and Support Thread - page 128. (Read 355842 times)

legendary
Activity: 2408
Merit: 1004
128 is low I think I have mine at 1024
legendary
Activity: 966
Merit: 1003
what should my dificulty be set at its 128 now
128 is fine for now. Most of the big pools are set up to adjust your difficulty "higher" automatically if its needed but they don't pull it back "lower" in case you set it high for a specific equipment related reason. It may take 12 or more hours for a pool to adjust you higher. Just keep in mind that the main reason for pool difficulty to increase for your worker "instance" is that it reduces the size and frequency of Ethernet traffic between you and the pool servers.  
  If you use BTCGuild you can set your difficulty minimum under the "worker" tab to "match your config" and it won't kick out a message saying that the diff doesn't "match" and start you out at "2". I won't comment on the other pool behaviors, I can't remember if they are the same.
hero member
Activity: 616
Merit: 500
I got Satoshi's avatar!

I downloaded that program and the Bitmain.img file in the quotes but My win32 disk Imager program doesn't offer any option to format. I can format in windows explorer under fat32 I used "Default Unit Size" as Allocation unit size optionquick format checked. I tried to do this to one miner and it worked! Only after i bought a new micro sd card, I think re-writing the micro sd a bunch of times corrupted it. I'll try the same on the other two now.

OK Update.. Good news all 3 1TH/s miners are hashing, the problem was with the Micro SD cards. 3 new Verbatim 8gb cards & it works.
I suggest making an img file of each of your current cards and writing them to the bitmain supplied SD cards as backups... it'll make the next switchover a lot quicker Wink

My S2 also went down last night, it suddenly started beeping like crazy after dropping to 800GH/s when my S1 had no problems. I ejected the card, switched it off, reinserted the card and it started up and carried on as normal, although I find it hashes more often below 1TH/s than above  Undecided
sr. member
Activity: 252
Merit: 250
what should my dificulty be set at its 128 now
sr. member
Activity: 252
Merit: 250
so 3 1/2 hours and i got it running a few guys pm'd .... thanx but wound up using some phone support.... pi wasn't connected and a fan male prong was bent...got it back straight with  a wine key, i pour a lot of wine at my job...  so its running now,, what should i expect? is all the sudden its gonna stop if i don't flash something or replace an sd card??? i cant believe i made it this far.. the interface looks so crappy like calico vision, do i up date it??
pool recommendations??
full member
Activity: 144
Merit: 100
Is BTC6.5 bad investment for batch 3?

IMHO yes...not a good investment...

Let's do some math... S1 is 0.831 BTC ...or $410-415 ( @112Bit as well)...

S2 is generally replicated 5 x S1 ...in a rack box ...10 blades vs 2 blades design...900Gh vs 1000Gh

So $410 x 5 = around $2,000 ...add 1 more blade ...around $2,100 ...all other parts, including PSU, case, LED etc are maybe another $100 at cost...$2,200...but they are saving of 4 controllers less...and they are not so cheap...

My guess is that In May we will see price in the $2,000 and a change range...

What do you think...? Am I missing something...?  

S2 is way over priced BUT saves on electricity.
Still overpriced though...

S1 and S2 are priced about the same per chip.  Ten times as many chips ten times the price.

bad investment...

AntMiner S2 1TH/s Miner Batch 3 = Price:      3199 USD ( 7.064 BTC )

S2 over price..
legendary
Activity: 2968
Merit: 1198
To follow up a bit on the corrupt SD issue, I did not think there was anything writing to the flash during normal operation.

To test this you can turn on debugging of block I/O operations as follows:

Code:
echo 1 >/proc/sys/vm/block_dump

Once that is done, any operations that access block devices will be logged to the kernel output, which you can see with

Code:
dmesg

I see no block I/O during normal operation.

If you do these commands with debugging turned on:

Code:
cd /config
touch a
rm a

you can see I/O occurring as you create the file and delete it. But normally there is none. You will likewise see activity when you change the config files through the web.

Turn off block debugging with

Code:
echo 0 >/proc/sys/vm/block_dump

I still don't know why the SD card is getting corrupted, but I can say that it isn't because of writes the SD card during normal operation.




sr. member
Activity: 252
Merit: 250
so i just got my 1th/s miner, i sure could use some help here setting it up after reading this i think i am in way over my head,,, mine came from hong kong via gawminers...just pm if you have some willingness thanx all...
legendary
Activity: 2254
Merit: 1020
★ Ⓚ KORE TEAM Ⓚ ★

I downloaded that program and the Bitmain.img file in the quotes but My win32 disk Imager program doesn't offer any option to format. I can format in windows explorer under fat32 I used "Default Unit Size" as Allocation unit size optionquick format checked. I tried to do this to one miner and it worked! Only after i bought a new micro sd card, I think re-writing the micro sd a bunch of times corrupted it. I'll try the same on the other two now.

OK Update.. Good news all 3 1TH/s miners are hashing, the problem was with the Micro SD cards. 3 new Verbatim 8gb cards & it works.
If you SSH into the OS and do a shutdown prior to powering down, you will greatly reduce the chances of trashing your SD card. The problem is likely to happen when you power off while a program is writing data to the file system. MBP Bitfury rigs delivered last year also had the same problem. Of course, getting good SD cards like you did also helps a lot.

Has anybody figured out why this is happening? I can't find anything in the OS that writes to the file system.



I'm way out of my league here BUT
IF you have more than one S2 I found I could copy the good file from one SD card and then
after deleting all the files on the other card just paste them in.
Of course you need to only have one running at a time since both would have the same IP address
and would need it to be changed to another...so you don't have conflicts...that can cause problems too
needing to do a reset to default.
You could also just have someone mail you the SD cards contents IF you only have 1-S2...
legendary
Activity: 2968
Merit: 1198

I downloaded that program and the Bitmain.img file in the quotes but My win32 disk Imager program doesn't offer any option to format. I can format in windows explorer under fat32 I used "Default Unit Size" as Allocation unit size optionquick format checked. I tried to do this to one miner and it worked! Only after i bought a new micro sd card, I think re-writing the micro sd a bunch of times corrupted it. I'll try the same on the other two now.

OK Update.. Good news all 3 1TH/s miners are hashing, the problem was with the Micro SD cards. 3 new Verbatim 8gb cards & it works.
If you SSH into the OS and do a shutdown prior to powering down, you will greatly reduce the chances of trashing your SD card. The problem is likely to happen when you power off while a program is writing data to the file system. MBP Bitfury rigs delivered last year also had the same problem. Of course, getting good SD cards like you did also helps a lot.

Has anybody figured out why this is happening? I can't find anything in the OS that writes to the file system.

donator
Activity: 1617
Merit: 1012

I downloaded that program and the Bitmain.img file in the quotes but My win32 disk Imager program doesn't offer any option to format. I can format in windows explorer under fat32 I used "Default Unit Size" as Allocation unit size optionquick format checked. I tried to do this to one miner and it worked! Only after i bought a new micro sd card, I think re-writing the micro sd a bunch of times corrupted it. I'll try the same on the other two now.

OK Update.. Good news all 3 1TH/s miners are hashing, the problem was with the Micro SD cards. 3 new Verbatim 8gb cards & it works.
If you SSH into the OS and do a shutdown prior to powering down, you will greatly reduce the chances of trashing your SD card. The problem is likely to happen when you power off while a program is writing data to the file system. MBP Bitfury rigs delivered last year also had the same problem. Of course, getting good SD cards like you did also helps a lot.
sr. member
Activity: 308
Merit: 250
Double your Personal Bitcoin Funds.
Glad you got the SD card issue out of the way. My batch 3 miner should be coming soon and I'm ready for the frustration.
newbie
Activity: 3
Merit: 0

I downloaded that program and the Bitmain.img file in the quotes but My win32 disk Imager program doesn't offer any option to format. I can format in windows explorer under fat32 I used "Default Unit Size" as Allocation unit size optionquick format checked. I tried to do this to one miner and it worked! Only after i bought a new micro sd card, I think re-writing the micro sd a bunch of times corrupted it. I'll try the same on the other two now.

OK Update.. Good news all 3 1TH/s miners are hashing, the problem was with the Micro SD cards. 3 new Verbatim 8gb cards & it works.
member
Activity: 64
Merit: 10
I have a major problem and need troubleshooting help! Today all 3 of my 1TH/s miners stopped working.  Angry One stopped working after mining non-stop for a couple of weeks (it was left alone and untouched) so it couldn't of been hit at all. I turned it off and back on, nothing. I ordered a total of 3 from batch one and today all 3 stopped working after i turned them off and back on! all i did was power down and turn them back on & the screen just displays a dark blue square, a red light & the fans always run full blast, I cant even see them on my network. I find it strange that all 3 decided to kick the bucket on the same day. Should I RMA all 3 i'm not sure what to do.



you might just be the only batch 1 owner who has not yet had to deal with this issue.  I think everyone deals with it sooner or later.
don't try to RMA your miners - they are not busted.

read back 20 pages or so, and you'll see discussions of these two problems:

-power supply stuck off.  it happens because the power supply has a piece of wire shorting two pins to force it to turn on and stay on all the time.  when you kill the power, it refuses to power on again for about 5 minutes.  just wait.

-SD card corrupt.  this one is more of a pain in the ass.  you have to remove it, reflash it and reinstall it.  again, detailed directions on how to do so further back in this thread.  but don't bother resorting to this until you've tried turning it off and on again (with 5 mins in between) at least 5 times.  it might just boot up on it's own.

hero member
Activity: 728
Merit: 500


I am sure they got delivered like this:



legendary
Activity: 2254
Merit: 1020
★ Ⓚ KORE TEAM Ⓚ ★
I have a major problem and need troubleshooting help! Today all 3 of my 1TH/s miners stopped working.  Angry One stopped working after mining non-stop for a couple of weeks (it was left alone and untouched) so it couldn't of been hit at all. I turned it off and back on, nothing. I ordered a total of 3 from batch one and today all 3 stopped working after i turned them off and back on! all i did was power down and turn them back on & the screen just displays a dark blue square, a red light & the fans always run full blast, I cant even see them on my network. I find it strange that all 3 decided to kick the bucket on the same day. Should I RMA all 3 i'm not sure what to do.



wait 10 minutes then try again.

Shut off PSU by the switch on it.
Wait till it cools.
Restart.

Run heavier cable and in cooler area and/or on the floor or basement etc.
newbie
Activity: 37
Merit: 0
I have a major problem and need troubleshooting help! Today all 3 of my 1TH/s miners stopped working.  Angry One stopped working after mining non-stop for a couple of weeks (it was left alone and untouched) so it couldn't of been hit at all. I turned it off and back on, nothing. I ordered a total of 3 from batch one and today all 3 stopped working after i turned them off and back on! all i did was power down and turn them back on & the screen just displays a dark blue square, a red light & the fans always run full blast, I cant even see them on my network. I find it strange that all 3 decided to kick the bucket on the same day. Should I RMA all 3 i'm not sure what to do.



wait 10 minutes then try again.
newbie
Activity: 3
Merit: 0
I have a major problem and need troubleshooting help! Today all 3 of my 1TH/s miners stopped working.  Angry One stopped working after mining non-stop for a couple of weeks (it was left alone and untouched) so it couldn't of been hit at all. I turned it off and back on, nothing. I ordered a total of 3 from batch one and today all 3 stopped working after i turned them off and back on! all i did was power down and turn them back on & the screen just displays a dark blue square, a red light & the fans always run full blast, I cant even see them on my network. I find it strange that all 3 decided to kick the bucket on the same day. Should I RMA all 3 i'm not sure what to do.

legendary
Activity: 896
Merit: 1006
First 100% Liquid Stablecoin Backed by Gold
Is BTC6.5 bad investment for batch 3?

IMHO yes...not a good investment...

Let's do some math... S1 is 0.831 BTC ...or $410-415 ( @112Bit as well)...

S2 is generally replicated 5 x S1 ...in a rack box ...10 blades vs 2 blades design...900Gh vs 1000Gh

So $410 x 5 = around $2,000 ...add 1 more blade ...around $2,100 ...all other parts, including PSU, case, LED etc are maybe another $100 at cost...$2,200...but they are saving of 4 controllers less...and they are not so cheap...

My guess is that In May we will see price in the $2,000 and a change range...

What do you think...? Am I missing something...?  

S2 is way over priced BUT saves on electricity.
Still overpriced though...

S1 and S2 are priced about the same per chip.  Ten times as many chips ten times the price.
hero member
Activity: 635
Merit: 500
I can't get how this comes to antminer topic?  Huh
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