Ultra Under-overclock image for A2 Innosilicon by Emdje - V5.0

[emdje]

The first instruction video of more to come:
How to SSH into the Innosilicon A2

(click and watch to donate the views  )

[1714946631]

1714946631

[1714946631]

1714946631

[1714946631]

1714946631

[1714946631]

1714946631

[pictsidhe]

I downloaded the latest underclocking version a few weeks back. It ran fine for a while, yesterday, it stopped. It tries to start, but exits. Sometimes it reports no A2 boards, other times, it reports no pools, and exits. /var/www/cgminer.log below 5 boards is correct, I'm pulling 1 at a time to underclock some more. I can copy cgminer into my minereu firmware card for now, but that had an annoying habit of dropping boards, which emdje firmware doesn't. I'm using same servers with minereu firmware, which runs ok. I can pull more logs if you tell me where to look. Starting manually doesn't work either. I used

sudo /var/www/cgminer -o stratum+tcp://eu-01.miningrigrentals.com:3333#xnsub -u pictsidhe.10165 -p x -o stratum+tcp://us-central01.miningrigrentals.com:3333#xnsub -u pictsidhe.10165 -p x -o stratum+tcp://us-west01.miningrigrentals.com:3333#xnsub -u pictsidhe.10165 -p x --A1Pll1 1000 --A1Pll2 1000 --A1Pll3 1100 --A1Pll4 1100 --A1Pll5 1100 --A1Pll6 1100

and sometimes it starts but can't find pools then exits, other times it finds no boards:

[2015-04-19 17:03:58] Started cgminer 3.9.0
 [2015-04-19 17:03:58] Run Reset=0
 [2015-04-19 17:03:58] SPI Speed 4000 kHz
 [2015-04-19 17:03:58] ST MCU - Disable
 [2015-04-19 17:03:58] A2 = 1000,9
 [2015-04-19 17:03:58] A2 PLL Clock = 1000MHz
 [2015-04-19 17:03:58] A2 = 1000,9
 [2015-04-19 17:03:58] A2 PLL Clock = 1000MHz
 [2015-04-19 17:03:58] A2 = 1100,8
 [2015-04-19 17:03:58] A2 PLL Clock = 1100MHz
 [2015-04-19 17:03:58] A2 = 1100,8
 [2015-04-19 17:03:58] A2 PLL Clock = 1100MHz
 [2015-04-19 17:03:58] A2 = 1100,8
 [2015-04-19 17:03:58] A2 PLL Clock = 1100MHz
 [2015-04-19 17:03:58] A2 = 1100,8
 [2015-04-19 17:03:58] A2 PLL Clock = 1100MHz
 [2015-04-19 17:03:58] GPIO CS is OFF
 [2015-04-19 17:03:59] Failure(cs0)(20): missing ACK for cmd 0x04
 [2015-04-19 17:03:59] ACK(cs0) timeout:cmd_RESET_BCAST-1.2693s
 [2015-04-19 17:03:59] No any A2 board

No any A2 board
: No such file or directory


removing #xnsub doesn't help

less /var/www/cgminer.log
 [2015-04-19 16:39:36] Found chip 1 with 54 active cores
 [2015-04-19 16:39:36] Found chip 2 with 54 active cores
 [2015-04-19 16:39:36] Found chip 3 with 54 active cores
 [2015-04-19 16:39:36] Found chip 4 with 52 active cores
 [2015-04-19 16:39:36] Found chip 5 with 54 active cores
 [2015-04-19 16:39:36] Found chip 6 with 53 active cores
 [2015-04-19 16:39:36] Found chip 7 with 54 active cores
 [2015-04-19 16:39:36] Found chip 8 with 52 active cores
 [2015-04-19 16:39:36] Found 8 chips with total 427 active cores
 [2015-04-19 16:39:37] spidev0.0(cs2): Found 8 A2 chips
 [2015-04-19 16:39:37] Found chip 1 with 54 active cores
 [2015-04-19 16:39:37] Found chip 2 with 54 active cores
 [2015-04-19 16:39:37] Found chip 3 with 54 active cores
 [2015-04-19 16:39:37] Found chip 4 with 54 active cores
 [2015-04-19 16:39:37] Found chip 5 with 54 active cores
 [2015-04-19 16:39:37] Found chip 6 with 54 active cores
 [2015-04-19 16:39:37] Found chip 7 with 54 active cores
 [2015-04-19 16:39:37] Found chip 8 with 54 active cores
 [2015-04-19 16:39:37] Found 8 chips with total 432 active cores
 [2015-04-19 16:39:38] spidev0.0(cs3): Found 8 A2 chips
 [2015-04-19 16:39:38] Found chip 1 with 54 active cores
 [2015-04-19 16:39:38] Found chip 2 with 54 active cores
 [2015-04-19 16:39:38] Found chip 3 with 54 active cores
 [2015-04-19 16:39:38] Found chip 4 with 54 active cores
 [2015-04-19 16:39:38] Found chip 5 with 54 active cores
 [2015-04-19 16:39:38] Found chip 6 with 54 active cores
 [2015-04-19 16:39:38] Found chip 7 with 54 active cores
 [2015-04-19 16:39:38] Found chip 8 with 54 active cores
 [2015-04-19 16:39:38] Found 8 chips with total 432 active cores
 [2015-04-19 16:39:39] spidev0.0(cs4): Found 8 A2 chips
 [2015-04-19 16:39:39] Found chip 1 with 54 active cores
 [2015-04-19 16:39:39] Found chip 2 with 54 active cores
 [2015-04-19 16:39:39] Found chip 3 with 54 active cores
 [2015-04-19 16:39:39] Found chip 4 with 54 active cores
 [2015-04-19 16:39:39] Found chip 5 with 54 active cores
 [2015-04-19 16:39:39] Found chip 6 with 54 active cores
 [2015-04-19 16:39:39] Found chip 7 with 54 active cores
 [2015-04-19 16:39:39] Found chip 8 with 54 active cores
 [2015-04-19 16:39:39] Found 8 chips with total 432 active cores
 [2015-04-19 16:39:40] spidev0.0(cs5): Found 8 A2 chips
 [2015-04-19 16:39:40] Found chip 1 with 54 active cores
 [2015-04-19 16:39:40] Found chip 2 with 54 active cores
 [2015-04-19 16:39:40] Found chip 3 with 53 active cores
 [2015-04-19 16:39:40] Found chip 4 with 54 active cores
 [2015-04-19 16:39:40] Found chip 5 with 54 active cores
 [2015-04-19 16:39:40] Found chip 6 with 53 active cores
 [2015-04-19 16:39:40] Found chip 7 with 54 active cores
 [2015-04-19 16:39:40] Found chip 8 with 54 active cores
 [2015-04-19 16:39:40] Found 8 chips with total 430 active cores
 [2015-04-19 16:39:40] A2 boards=5, active cores=2153, Efficient=99%, speed=61.4M
 [2015-04-19 16:39:40] Probing for an alive pool
 [2015-04-19 16:39:50] Waiting for work to be available from pools.
 [2015-04-19 16:40:40] No servers were found that could be used to get work from.
 [2015-04-19 16:40:40] Please check the details from the list below of the servers you have input
 [2015-04-19 16:40:40] Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers
 [2015-04-19 16:40:40] Pool: 0  URL: stratum+tcp://eu-01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 16:40:40] Pool: 1  URL: stratum+tcp://us-central01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 16:40:40] Pool: 2  URL: stratum+tcp://us-west01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 16:40:40] No servers could be used! Exiting.

let me know if you need other logs, Emdje firmware is on a spare sd card so it's sitting around.

[emdje]

I downloaded the latest underclocking version a few weeks back. It ran fine for a while, yesterday, it stopped. It tries to start, but exits. Sometimes it reports no A2 boards, other times, it reports no pools, and exits. /var/www/cgminer.log below 5 boards is correct, I'm pulling 1 at a time to underclock some more. I can copy cgminer into my minereu firmware card for now, but that had an annoying habit of dropping boards, which emdje firmware doesn't. I'm using same servers with minereu firmware, which runs ok. I can pull more logs if you tell me where to look. Starting manually doesn't work either. I used

sudo /var/www/cgminer -o stratum+tcp://eu-01.miningrigrentals.com:3333#xnsub -u pictsidhe.10165 -p x -o stratum+tcp://us-central01.miningrigrentals.com:3333#xnsub -u pictsidhe.10165 -p x -o stratum+tcp://us-west01.miningrigrentals.com:3333#xnsub -u pictsidhe.10165 -p x --A1Pll1 1000 --A1Pll2 1000 --A1Pll3 1100 --A1Pll4 1100 --A1Pll5 1100 --A1Pll6 1100

and sometimes it starts but can't find pools then exits, other times it finds no boards:

Code:

[2015-04-19 17:03:58] Started cgminer 3.9.0
 [2015-04-19 17:03:58] Run Reset=0
 [2015-04-19 17:03:58] SPI Speed 4000 kHz
 [2015-04-19 17:03:58] ST MCU - Disable
 [2015-04-19 17:03:58] A2 = 1000,9
 [2015-04-19 17:03:58] A2 PLL Clock = 1000MHz
 [2015-04-19 17:03:58] A2 = 1000,9
 [2015-04-19 17:03:58] A2 PLL Clock = 1000MHz
 [2015-04-19 17:03:58] A2 = 1100,8
 [2015-04-19 17:03:58] A2 PLL Clock = 1100MHz
 [2015-04-19 17:03:58] A2 = 1100,8
 [2015-04-19 17:03:58] A2 PLL Clock = 1100MHz
 [2015-04-19 17:03:58] A2 = 1100,8
 [2015-04-19 17:03:58] A2 PLL Clock = 1100MHz
 [2015-04-19 17:03:58] A2 = 1100,8
 [2015-04-19 17:03:58] A2 PLL Clock = 1100MHz
 [2015-04-19 17:03:58] GPIO CS is OFF
 [2015-04-19 17:03:59] Failure(cs0)(20): missing ACK for cmd 0x04
 [2015-04-19 17:03:59] ACK(cs0) timeout:cmd_RESET_BCAST-1.2693s
 [2015-04-19 17:03:59] No any A2 board

No any A2 board
: No such file or directory

removing #xnsub doesn't help

less /var/www/cgminer.log

Code:

 [2015-04-19 16:39:36] Found chip 1 with 54 active cores
 [2015-04-19 16:39:36] Found chip 2 with 54 active cores
 [2015-04-19 16:39:36] Found chip 3 with 54 active cores
 [2015-04-19 16:39:36] Found chip 4 with 52 active cores
 [2015-04-19 16:39:36] Found chip 5 with 54 active cores
 [2015-04-19 16:39:36] Found chip 6 with 53 active cores
 [2015-04-19 16:39:36] Found chip 7 with 54 active cores
 [2015-04-19 16:39:36] Found chip 8 with 52 active cores
 [2015-04-19 16:39:36] Found 8 chips with total 427 active cores
 [2015-04-19 16:39:37] spidev0.0(cs2): Found 8 A2 chips
 [2015-04-19 16:39:37] Found chip 1 with 54 active cores
 [2015-04-19 16:39:37] Found chip 2 with 54 active cores
 [2015-04-19 16:39:37] Found chip 3 with 54 active cores
 [2015-04-19 16:39:37] Found chip 4 with 54 active cores
 [2015-04-19 16:39:37] Found chip 5 with 54 active cores
 [2015-04-19 16:39:37] Found chip 6 with 54 active cores
 [2015-04-19 16:39:37] Found chip 7 with 54 active cores
 [2015-04-19 16:39:37] Found chip 8 with 54 active cores
 [2015-04-19 16:39:37] Found 8 chips with total 432 active cores
 [2015-04-19 16:39:38] spidev0.0(cs3): Found 8 A2 chips
 [2015-04-19 16:39:38] Found chip 1 with 54 active cores
 [2015-04-19 16:39:38] Found chip 2 with 54 active cores
 [2015-04-19 16:39:38] Found chip 3 with 54 active cores
 [2015-04-19 16:39:38] Found chip 4 with 54 active cores
 [2015-04-19 16:39:38] Found chip 5 with 54 active cores
 [2015-04-19 16:39:38] Found chip 6 with 54 active cores
 [2015-04-19 16:39:38] Found chip 7 with 54 active cores
 [2015-04-19 16:39:38] Found chip 8 with 54 active cores
 [2015-04-19 16:39:38] Found 8 chips with total 432 active cores
 [2015-04-19 16:39:39] spidev0.0(cs4): Found 8 A2 chips
 [2015-04-19 16:39:39] Found chip 1 with 54 active cores
 [2015-04-19 16:39:39] Found chip 2 with 54 active cores
 [2015-04-19 16:39:39] Found chip 3 with 54 active cores
 [2015-04-19 16:39:39] Found chip 4 with 54 active cores
 [2015-04-19 16:39:39] Found chip 5 with 54 active cores
 [2015-04-19 16:39:39] Found chip 6 with 54 active cores
 [2015-04-19 16:39:39] Found chip 7 with 54 active cores
 [2015-04-19 16:39:39] Found chip 8 with 54 active cores
 [2015-04-19 16:39:39] Found 8 chips with total 432 active cores
 [2015-04-19 16:39:40] spidev0.0(cs5): Found 8 A2 chips
 [2015-04-19 16:39:40] Found chip 1 with 54 active cores
 [2015-04-19 16:39:40] Found chip 2 with 54 active cores
 [2015-04-19 16:39:40] Found chip 3 with 53 active cores
 [2015-04-19 16:39:40] Found chip 4 with 54 active cores
 [2015-04-19 16:39:40] Found chip 5 with 54 active cores
 [2015-04-19 16:39:40] Found chip 6 with 53 active cores
 [2015-04-19 16:39:40] Found chip 7 with 54 active cores
 [2015-04-19 16:39:40] Found chip 8 with 54 active cores
 [2015-04-19 16:39:40] Found 8 chips with total 430 active cores
 [2015-04-19 16:39:40] A2 boards=5, active cores=2153, Efficient=99%, speed=61.4M
 [2015-04-19 16:39:40] Probing for an alive pool
 [2015-04-19 16:39:50] Waiting for work to be available from pools.
 [2015-04-19 16:40:40] No servers were found that could be used to get work from.
 [2015-04-19 16:40:40] Please check the details from the list below of the servers you have input
 [2015-04-19 16:40:40] Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers
 [2015-04-19 16:40:40] Pool: 0  URL: stratum+tcp://eu-01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 16:40:40] Pool: 1  URL: stratum+tcp://us-central01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 16:40:40] Pool: 2  URL: stratum+tcp://us-west01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 16:40:40] No servers could be used! Exiting.

let me know if you need other logs, Emdje firmware is on a spare sd card so it's sitting around.

The first log reports that 'Run Reset' as well as 'ST MCU' and 'GPIO CS' are all disabled, which is very weird. That is the reason you aren't hashing in the first log, because they all should be enabled.
In the second log you don't report the first bit, so I can't say anything about that.

Did you use the complete image? Or did you only copy the new cgminer?

[pictsidhe]

Complete image. The 2nd log is /var/www/cgminer.log I think I got it all. I can't see what errors it produces when it autostarts, but the manual start produces both no boards and no pools errors.
Do you want anything else, or shall I burn a fresh copy? I'm likely to be leaving it unattended for a several months soon soon, so I'd like to find out what broke and how not to have it break again. Minereu is working atm, but it has that annoying habit of occasionally dropping boards. It's web interface is funny about starting too.

I'm using Transcend 8gb ultimate cards, which I've found to be extremely reliable (got 4 in pi mining rigs, not had any die or glitch on me). Pity they seem to have stopped making them...

[pictsidhe]

Where is cgminer started from?

[emdje]

If you have a spare card I would burn a new one and try it with that.
Cgminer is started from the /var/www folder

About your log, your second log should start like the first one you posted.

Hope it helps

[wolverine5pl]

I get NO DEVICE RUNNING
any idea why? is my A2 broken?
got it today:(

[emdje]

I get NO DEVICE RUNNING
any idea why? is my A2 broken?
got it today:(

Could you post the logs?

If you don't know how: First ssh into the miner: https://www.youtube.com/watch?v=L4iyDFsepxI
second: open the file explorer, than navigate to the /var/www folder and open copy the cgminer.log

And, are the lights on the blade blinking when you start the machine? Or are they burning continiously?

[wolverine5pl]

only blue light and one light on side of plate on top of blade.

about logs. tried your image but wasnt lucky.

on image that was installed was reporting no device.

[pictsidhe]

If you have a spare card I would burn a new one and try it with that.
Cgminer is started from the /var/www folder

About your log, your second log should start like the first one you posted.

Hope it helps

what program starts cgminer? I'll try and work backwards and add more logging to find out what is going on

[pictsidhe]

Just burning another copy isn't an option. I need this to be reliable as it will left unattended for some months soon. It seems other people are have the same problem. I won't be able to burn new firmware every weeks once I'm away. I'd like to fix it properly, give me some clues where to look and I'll have a go. Otherwise, it's keeping the glitchy Minereu firmware but with your cgminer for now. Minereu does drop boards randomly, without reliable firmware, I'll probably just sell the thing as profitability is getting tight now.

I don't know where cgminer is invoked, what invokes that etc, reading every file for clues gets tedious fast.

It took me weeks to work out where to modify the Minera web interface on my gridseeds to underclock below 600MHz, hacking cpuminer was the easy bit. My gridseed blades are now rock solid and hashing away at 7J/MH. I'm trying to get the A2 to similar efficiency and reliability or it's getting sold, I have about 3 weeks to do this, and not that much time. Not enough time to read every file to work out how your firmware works.

[emdje]

Understood, I will have a look later this week to see if I can help you.
Cgminer is started using a Bash Script, which you can see in the index file.

[emdje]

only blue light and one light on side of plate on top of blade.

about logs. tried your image but wasnt lucky.

on image that was installed was reporting no device.

If you look closely on the blades you will see LED's that are marked LED_UA4 - LED_UA3 ...... to LED_UB1. These LED's indicate if the chip is properly working. When blinking they are noticed by the software but not running yet, when they are not blinking they are hashing and when they are off there not working.

[wolverine5pl]

only blue light and one light on side of plate on top of blade.

about logs. tried your image but wasnt lucky.

on image that was installed was reporting no device.

If you look closely on the blades you will see LED's that are marked LED_UA4 - LED_UA3 ...... to LED_UB1. These LED's indicate if the chip is properly working. When blinking they are noticed by the software but not running yet, when they are not blinking they are hashing and when they are off there not working.

after closer examination I found lose resistor in chasis. after soldering it back on small board blades came back to life:) thanks for help guys

[pictsidhe]

I've had a  rummage, your image is infinitely simpler than minereu or even scripta, whoopsie.

I've set it to append logs to cgminer.log so it does more than one session and had a nose around.

If it can't connect to servers on starting, cgminer exits. It doesn't seem to retry, at least not very often. this is not good for those of us with flaky internet, is there no watchdog? I can't find one, but may be looking in the wrong place. I thought there was a swiitch to stop cgminer exiting, but can't find it, maybe it's just cpuminer. I wrote a crude watchdog for my rigs two years back, I should be able to find it, somewhere. I haven't got it to duplicate the no A2 miners found error today.

I'm currently cloning minera to see if I can get that to play ball, I have it running sweetly on my gridseed blades. It might be worth you collaborating with Michelle if I fail. I tried to get cgminer to run on my gridseeds last year, but failed.

log from this morning, while both connections was down (it's fun out here in the sticks). It exited repeatedly the same way a weekish back when it did have a live connection, possibly servers were sluggish? Both main and secondary connections pinged ok to google DNS that time. My other rigs were showing as hashing on the pool site. The only thing I've done to your image since last week is change '> cgminer.log' to '>> cgminer.log' in index.php and run.sh it's running now...

[2015-04-19 17:21:52] Started cgminer 3.9.0
 [2015-04-19 17:21:52] Run Reset=1
 [2015-04-19 17:21:52] ST MCU hardware reset start
 [2015-04-19 17:21:56] SPI Speed 4000 kHz
 [2015-04-19 17:21:56] ST MCU - Enable (Pre-header)
 [2015-04-19 17:21:56] A2 = 1000,9
 [2015-04-19 17:21:56] A2 PLL Clock = 1000MHz
 [2015-04-19 17:21:56] A2 = 1000,9
 [2015-04-19 17:21:56] A2 PLL Clock = 1000MHz
 [2015-04-19 17:21:56] A2 = 1100,8
 [2015-04-19 17:21:56] A2 PLL Clock = 1100MHz
 [2015-04-19 17:21:56] A2 = 1100,8
 [2015-04-19 17:21:56] A2 PLL Clock = 1100MHz
 [2015-04-19 17:21:56] A2 = 1100,8
 [2015-04-19 17:21:56] A2 PLL Clock = 1100MHz
 [2015-04-19 17:21:56] A2 = 1100,8
 [2015-04-19 17:21:56] A2 PLL Clock = 1100MHz
 [2015-04-19 17:21:56] AUTO GPIO CS
 [2015-04-19 17:21:56] spidev0.0(cs0): Found 8 A2 chips
 [2015-04-19 17:21:56] Found chip 1 with 54 active cores
 [2015-04-19 17:21:56] Found chip 2 with 52 active cores
 [2015-04-19 17:21:56] Found chip 3 with 53 active cores
 [2015-04-19 17:21:56] Found chip 4 with 54 active cores
 [2015-04-19 17:21:56] Found chip 5 with 54 active cores
 [2015-04-19 17:21:56] Found chip 6 with 54 active cores
 [2015-04-19 17:21:56] Found chip 7 with 53 active cores
 [2015-04-19 17:21:56] Found chip 8 with 53 active cores
 [2015-04-19 17:21:56] Found 8 chips with total 427 active cores
 [2015-04-19 17:21:56] spidev0.0(cs1): Found 8 A2 chips
 [2015-04-19 17:21:56] Found chip 1 with 51 active cores
 [2015-04-19 17:21:56] Found chip 2 with 54 active cores
 [2015-04-19 17:21:56] Found chip 3 with 37 active cores
 [2015-04-19 17:21:56] Found chip 4 with 52 active cores
 [2015-04-19 17:21:56] Found chip 5 with 54 active cores
 [2015-04-19 17:21:56] Found chip 6 with 53 active cores
 [2015-04-19 17:21:56] Found chip 7 with 53 active cores
 [2015-04-19 17:21:56] Found chip 8 with 52 active cores
 [2015-04-19 17:21:56] Found 8 chips with total 406 active cores
 [2015-04-19 17:21:57] spidev0.0(cs2): Found 8 A2 chips
 [2015-04-19 17:21:57] Found chip 1 with 54 active cores
 [2015-04-19 17:21:57] Found chip 2 with 54 active cores
 [2015-04-19 17:21:57] Found chip 3 with 54 active cores
 [2015-04-19 17:21:57] Found chip 4 with 54 active cores
 [2015-04-19 17:21:57] Found chip 5 with 54 active cores
 [2015-04-19 17:21:57] Found chip 6 with 54 active cores
 [2015-04-19 17:21:57] Found chip 7 with 54 active cores
 [2015-04-19 17:21:57] Found chip 8 with 54 active cores
 [2015-04-19 17:21:57] Found 8 chips with total 432 active cores
 [2015-04-19 17:21:58] spidev0.0(cs3): Found 8 A2 chips
 [2015-04-19 17:21:58] Found chip 1 with 54 active cores
 [2015-04-19 17:21:58] Found chip 2 with 54 active cores
 [2015-04-19 17:21:58] Found chip 3 with 54 active cores
 [2015-04-19 17:21:58] Found chip 4 with 54 active cores
 [2015-04-19 17:21:58] Found chip 5 with 54 active cores
 [2015-04-19 17:21:58] Found chip 6 with 54 active cores
 [2015-04-19 17:21:58] Found chip 7 with 54 active cores
 [2015-04-19 17:21:58] Found chip 8 with 54 active cores
 [2015-04-19 17:21:58] Found 8 chips with total 432 active cores
 [2015-04-19 17:21:59] spidev0.0(cs4): Found 8 A2 chips
[2015-04-19 17:22:00] Found chip 1 with 54 active cores
 [2015-04-19 17:22:00] Found chip 2 with 54 active cores
 [2015-04-19 17:22:00] Found chip 3 with 53 active cores
 [2015-04-19 17:22:00] Found chip 4 with 54 active cores
 [2015-04-19 17:22:00] Found chip 5 with 54 active cores
 [2015-04-19 17:22:00] Found chip 6 with 53 active cores
 [2015-04-19 17:22:00] Found chip 7 with 54 active cores
 [2015-04-19 17:22:00] Found chip 8 with 53 active cores
 [2015-04-19 17:22:00] Found 8 chips with total 429 active cores
 [2015-04-19 17:22:00] A2 boards=6, active cores=2557, Efficient=98%, speed=72.9M
 [2015-04-19 17:22:00] Probing for an alive pool
 [2015-04-19 17:22:10] Waiting for work to be available from pools.
 [2015-04-19 17:22:41] Failed to resolve (?wrong URL) eu-01.miningrigrentals.com:3333
 [2015-04-19 17:22:41] Failed to resolve (?wrong URL) us-central01.miningrigrentals.com:3333
 [2015-04-19 17:22:41] Failed to resolve (?wrong URL) us-west01.miningrigrentals.com:3333
 [2015-04-19 17:23:00] No servers were found that could be used to get work from.
 [2015-04-19 17:23:00] Please check the details from the list below of the servers you have input
 [2015-04-19 17:23:00] Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers
 [2015-04-19 17:23:00] Pool: 0  URL: stratum+tcp://eu-01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 17:23:00] Pool: 1  URL: stratum+tcp://us-central01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 17:23:00] Pool: 2  URL: stratum+tcp://us-west01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 17:23:00] No servers could be used! Exiting.

[emdje]

I've had a  rummage, your image is infinitely simpler than minereu or even scripta, whoopsie.

I've set it to append logs to cgminer.log so it does more than one session and had a nose around.

If it can't connect to servers on starting, cgminer exits. It doesn't seem to retry, at least not very often. this is not good for those of us with flaky internet, is there no watchdog? I can't find one, but may be looking in the wrong place. I thought there was a swiitch to stop cgminer exiting, but can't find it, maybe it's just cpuminer. I wrote a crude watchdog for my rigs two years back, I should be able to find it, somewhere. I haven't got it to duplicate the no A2 miners found error today.

I'm currently cloning minera to see if I can get that to play ball, I have it running sweetly on my gridseed blades. It might be worth you collaborating with Michelle if I fail. I tried to get cgminer to run on my gridseeds last year, but failed.

log from this morning, while both connections was down (it's fun out here in the sticks). It exited repeatedly the same way a weekish back when it did have a live connection, possibly servers were sluggish? Both main and secondary connections pinged ok to google DNS that time. My other rigs were showing as hashing on the pool site. The only thing I've done to your image since last week is change '> cgminer.log' to '>> cgminer.log' in index.php and run.sh it's running now...

Code:

[2015-04-19 17:21:52] Started cgminer 3.9.0
 [2015-04-19 17:21:52] Run Reset=1
 [2015-04-19 17:21:52] ST MCU hardware reset start
 [2015-04-19 17:21:56] SPI Speed 4000 kHz
 [2015-04-19 17:21:56] ST MCU - Enable (Pre-header)
 [2015-04-19 17:21:56] A2 = 1000,9
 [2015-04-19 17:21:56] A2 PLL Clock = 1000MHz
 [2015-04-19 17:21:56] A2 = 1000,9
 [2015-04-19 17:21:56] A2 PLL Clock = 1000MHz
 [2015-04-19 17:21:56] A2 = 1100,8
 [2015-04-19 17:21:56] A2 PLL Clock = 1100MHz
 [2015-04-19 17:21:56] A2 = 1100,8
 [2015-04-19 17:21:56] A2 PLL Clock = 1100MHz
 [2015-04-19 17:21:56] A2 = 1100,8
 [2015-04-19 17:21:56] A2 PLL Clock = 1100MHz
 [2015-04-19 17:21:56] A2 = 1100,8
 [2015-04-19 17:21:56] A2 PLL Clock = 1100MHz
 [2015-04-19 17:21:56] AUTO GPIO CS
 [2015-04-19 17:21:56] spidev0.0(cs0): Found 8 A2 chips
 [2015-04-19 17:21:56] Found chip 1 with 54 active cores
 [2015-04-19 17:21:56] Found chip 2 with 52 active cores
 [2015-04-19 17:21:56] Found chip 3 with 53 active cores
 [2015-04-19 17:21:56] Found chip 4 with 54 active cores
 [2015-04-19 17:21:56] Found chip 5 with 54 active cores
 [2015-04-19 17:21:56] Found chip 6 with 54 active cores
 [2015-04-19 17:21:56] Found chip 7 with 53 active cores
 [2015-04-19 17:21:56] Found chip 8 with 53 active cores
 [2015-04-19 17:21:56] Found 8 chips with total 427 active cores
 [2015-04-19 17:21:56] spidev0.0(cs1): Found 8 A2 chips
 [2015-04-19 17:21:56] Found chip 1 with 51 active cores
 [2015-04-19 17:21:56] Found chip 2 with 54 active cores
 [2015-04-19 17:21:56] Found chip 3 with 37 active cores
 [2015-04-19 17:21:56] Found chip 4 with 52 active cores
 [2015-04-19 17:21:56] Found chip 5 with 54 active cores
 [2015-04-19 17:21:56] Found chip 6 with 53 active cores
 [2015-04-19 17:21:56] Found chip 7 with 53 active cores
 [2015-04-19 17:21:56] Found chip 8 with 52 active cores
 [2015-04-19 17:21:56] Found 8 chips with total 406 active cores
 [2015-04-19 17:21:57] spidev0.0(cs2): Found 8 A2 chips
 [2015-04-19 17:21:57] Found chip 1 with 54 active cores
 [2015-04-19 17:21:57] Found chip 2 with 54 active cores
 [2015-04-19 17:21:57] Found chip 3 with 54 active cores
 [2015-04-19 17:21:57] Found chip 4 with 54 active cores
 [2015-04-19 17:21:57] Found chip 5 with 54 active cores
 [2015-04-19 17:21:57] Found chip 6 with 54 active cores
 [2015-04-19 17:21:57] Found chip 7 with 54 active cores
 [2015-04-19 17:21:57] Found chip 8 with 54 active cores
 [2015-04-19 17:21:57] Found 8 chips with total 432 active cores
 [2015-04-19 17:21:58] spidev0.0(cs3): Found 8 A2 chips
 [2015-04-19 17:21:58] Found chip 1 with 54 active cores
 [2015-04-19 17:21:58] Found chip 2 with 54 active cores
 [2015-04-19 17:21:58] Found chip 3 with 54 active cores
 [2015-04-19 17:21:58] Found chip 4 with 54 active cores
 [2015-04-19 17:21:58] Found chip 5 with 54 active cores
 [2015-04-19 17:21:58] Found chip 6 with 54 active cores
 [2015-04-19 17:21:58] Found chip 7 with 54 active cores
 [2015-04-19 17:21:58] Found chip 8 with 54 active cores
 [2015-04-19 17:21:58] Found 8 chips with total 432 active cores
 [2015-04-19 17:21:59] spidev0.0(cs4): Found 8 A2 chips
[2015-04-19 17:22:00] Found chip 1 with 54 active cores
 [2015-04-19 17:22:00] Found chip 2 with 54 active cores
 [2015-04-19 17:22:00] Found chip 3 with 53 active cores
 [2015-04-19 17:22:00] Found chip 4 with 54 active cores
 [2015-04-19 17:22:00] Found chip 5 with 54 active cores
 [2015-04-19 17:22:00] Found chip 6 with 53 active cores
 [2015-04-19 17:22:00] Found chip 7 with 54 active cores
 [2015-04-19 17:22:00] Found chip 8 with 53 active cores
 [2015-04-19 17:22:00] Found 8 chips with total 429 active cores
 [2015-04-19 17:22:00] A2 boards=6, active cores=2557, Efficient=98%, speed=72.9M
 [2015-04-19 17:22:00] Probing for an alive pool
 [2015-04-19 17:22:10] Waiting for work to be available from pools.
 [2015-04-19 17:22:41] Failed to resolve (?wrong URL) eu-01.miningrigrentals.com:3333
 [2015-04-19 17:22:41] Failed to resolve (?wrong URL) us-central01.miningrigrentals.com:3333
 [2015-04-19 17:22:41] Failed to resolve (?wrong URL) us-west01.miningrigrentals.com:3333
 [2015-04-19 17:23:00] No servers were found that could be used to get work from.
 [2015-04-19 17:23:00] Please check the details from the list below of the servers you have input
 [2015-04-19 17:23:00] Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers
 [2015-04-19 17:23:00] Pool: 0  URL: stratum+tcp://eu-01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 17:23:00] Pool: 1  URL: stratum+tcp://us-central01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 17:23:00] Pool: 2  URL: stratum+tcp://us-west01.miningrigrentals.com:3333  User: pictsidhe.10165  Password: x
 [2015-04-19 17:23:00] No servers could be used! Exiting.

Yes there is a watchdog, but it seems that more people have troubles with version 4. I will revert back to the old stratum code, because I think that is the troublemaker. I have time tomorrow to fix that, and will post the binary as well as the complete image.

[emdje]

only blue light and one light on side of plate on top of blade.

about logs. tried your image but wasnt lucky.

on image that was installed was reporting no device.

If you look closely on the blades you will see LED's that are marked LED_UA4 - LED_UA3 ...... to LED_UB1. These LED's indicate if the chip is properly working. When blinking they are noticed by the software but not running yet, when they are not blinking they are hashing and when they are off there not working.

after closer examination I found lose resistor in chasis. after soldering it back on small board blades came back to life:) thanks for help guys

Great to hear that it is working again! But where did you buy these broken blades?

[wolverine5pl]

Ebay.  Tgey got damaged during transport across Europe.  Psu inside wasnt secured properly.

[pictsidhe]

I can't find a watchdog, no sign of cgminer getting restarted.

I've got my own watchdog running now.
Other than stopping, possibly when trying to start when servers aren't responding quickly enough, your image has worked ok.

I had a quick go at putting your cgminer in minera. It didn't seem to like the mix of command line and json.conf. I can't be bothered to delve into minera...

[wolverine5pl]

how to start cgminer from ssh on image for a2 mini?
i need to reboot my miner everytime i want to change pool
nvm found it:)
for some reason wasnt starting. just need to install screen and Im good to go. thanks for great image. scripta was crap. most of times cgminer woudnt start:/