Topic: ANTMINER S2 Discussion and Support Thread - page 152. (Read 355820 times)

Not that I've found. Haven't had a problem with the Batch 2 yet.

Also, I took one of the corrupted SD cards and made an image of it and sent it to the bitmain engineers. Hopefully it'll tell them something

Is there any way of powering down that reduces the risk of corrupting the SD, or just pull the plug and pray?

Buy new SD cards

Just wondering ... anyone in the UK received their batch 2 S2 this week? ... what did you have to pay the UPS or delivery guy for Customs payment?

Like others, I'm waiting for batch 3 ...

... And then the fun of re-building a box that fell apart during shipping, lol 

Well thank you my friend, but i'm concerned that i may actually be on the wrong track.....

Since a power outage earlier today, i've been busy reimaging the SD cards of two out of my three S2's.  The power outage knocked out two of them but the 3rd booted back up no problem.

I have now reimaged the SD cards twice, but i still can't get the machines to boot!

The lights of the BBB board all light up, but the blue activity lights do NOT.  This, to me, means the BBB board failed to boot for whatever reason.  In the past, it's been a corrupt SD card due to loosing power at a bad time, but i just can't seem to solve it this time.

I'm now imaging again using your just-uploaded version.  fingers crossed.

if this doesn't work, then what???

You're welcome (from earlier) and I've updated the file to be an image of the latest firmware, IP of 192.168.1.99

https://dl.dropboxusercontent.com/u/16075357/bitmain.img.zip

Link is the same, so using the other posted link will grab the new firmware. It has my mining info in it, so be a gent and let it mine for a bit! lol


UPDATE: Here's the latest image with the most recent firmware from June. https://dl.dropboxusercontent.com/u/16075357/S2firmware.img.zip  It's over 4GB so it won't fit on the stock card.

Just flash the image what 111 uploaded, then upgrade the new firmware from miner menu what you got from bitmain.

If anyone has a step-by-step on how to image the SD card using Win32 Disk Imager and the downloadable "initramfs.bin.SD-20140410.tar" from Bitmaintech's new support page, it would be VERY helpful.  I'm using an image file someone posted much earlier in this thread, but it's the old firmware version. 

*Prays to Hathor for Batch 3 soon*

The Beagle Bone has that corruption issue, not sure why but it happened to me in the past so I knew right away to have an extra SD Card ready.

The 1000W Platimax would go into safety mode on my 15AMP circuits and it does take 3-4 minutes to reset by itself, I fixed that by replacing it with a 1350W Platimax & it runs on the 20AMP line now.

So i've had my three batch 1 S2's running for over a week now, and have some observations:

Stable. 
when they run, they run.  have not had the need to babysit them.

corrupt SD cards. 
twice now, i've gotten corruption on the SD card on one machine or another.  If there's a power cut, i cross my fingers and hope for the best.  chances are, at least one machine will need it's SD card removed and re-imaged.  Big thanks to the guy who posted a link in this thread to a copy of his SD card.  Although Bitmaintech has now posted updates to the firmware, they are in the format needed to update via the web gui - not directly image the SD card.

this problem is particularly concerning as there is no "shutdown" option in the GUI or button on the case.  just the power switch.  So each time you shut it off, you have a 50/50 change of buggering the software.... yikes.

can't power on.
This problem is unrelated to the software issue described above.  for some reason, there's some kind built-in protection in the power supply that prevents it from being turned off and on again quickly.  i guess this is a good thing, except it give the impression that the thing is dead until you leave it be for at least 15 minutes between powering off and on again.   Have not found any work-around.  Now that i've learned this, i know to expect it, but to the uninitiated it is a temporarily heartbreaker.

Yeah, they need to improve the case design so it can withstand shipping without boards coming apart and cables coming loose.

These problems are too common to be attributed to "mishandling" during shipment. It is a design flaw. They need brackets and probably better connectors on the cables.

That said, no problems here.

edgar, i think these chips can handle 80C (but don't  take my word for it ), like a GPU and other ASICs, although that is now on the warm side....so i think you're ok for now.

I am using a 1200W Raidmax open case for now, and actually the fully enclosed unit is running the coolest....I imagine better airflow, not sure of the draw at the wall, I'll check that later and it is 6 PCIe connections.

I will test the stock PSU one more time, but I am sure its a bad one since the other 2 w/ stock PSUs are running fine showing 980GH/s each at the pool.

What better have batch 2
Better hashing speed?
Or better watt per wall?

Batch 2 seems to get better power consumption.

78-80 degress, cali is getting warm....all 3 are running, 2 fully, 1 with only 9 blades and Without the provide PSU as it shuts down, max temp of all units is 58C as usual on blade 1

The PSU shut down after 8hrs or so....I removed in put in a 1200W temp PSU....checked the bad PSU would power up, but now that its cooled it powers up.

I'm working on this.

Have to calculate the clock settings.

You've tried it with the stock setting in asic-freq for 225M?

I think those numbers are no good.

no they don't.....2 came in pretty good, just had to push down to seat the cards/blades...the 3rd came in like the pics above, looked like it exploded. At first I thought I had a bad mainboard but in the end it is a bad blade/module so off it goes to RMA. But now it seems I have a PSU shutting down....

My S2 was running fine overnight since last evening. Suddenly stopped hashing (based on pool stats).
Will have to investigate when I come back from work.

Anyone else had a similar experience?