S19J abnormal hashrate. No error in Kernel

[Flyguy729729]

Hey guys, 2 of my S19j just randomly stops hashing. Sometimes when i press restart, it will hash for about 5 minutes then stops. No error it seems on kernel. What could be the problem? I have another s19 just beside it and its running just fine.

Here's the kernel log.

https://pastebin.com/sQLtnThX

Here's the history kernel log : https://pastebin.com/K5qxquc6

Thanks in advance.

[BitMaxz]

Do you have a stable internet connection? What is your internet speed?

This is what I found

Code:

2021-12-21 11:30:58 WARN_NET_LOST: network connection lost
2021-12-21 11:30:58 will power off in 72 seconds in case not resume
2021-12-21 11:32:09 network connection lost for 5 min + 72 seconds, power off...
2021-12-21 11:32:16 chain avg vol drop to 1.27
2021-12-21 11:36:04 ****power off hashboard****

Can you try to run or switch to another pool server if you are living on ASIA you should use an ASIA pool server or if you are living in the US then you should use a US pool server to get the lower latency?

Also, notice this

Code:

021-12-21 11:36:09 Invalid config option --bitmain-fan-pwm: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-freq: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-voltage: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-ccdelay: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-pwth: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-freq-level: '' is not a number

and this below sometimes it doesn't have a fan power signal

Code:

2021-12-21 11:24:05 fan_eft : 0  fan_pwm : 0

The fan might be the issue that is why you have an invalid config option according to the above logs.

Try to upgrade it to the latest version and test it again if your issue doesn't solve then post the whole kernel logs again here.

[Flyguy729729]

Do you have a stable internet connection? What is your internet speed?

This is what I found

Code:

2021-12-21 11:30:58 WARN_NET_LOST: network connection lost
2021-12-21 11:30:58 will power off in 72 seconds in case not resume
2021-12-21 11:32:09 network connection lost for 5 min + 72 seconds, power off...
2021-12-21 11:32:16 chain avg vol drop to 1.27
2021-12-21 11:36:04 ****power off hashboard****

Can you try to run or switch to another pool server if you are living on ASIA you should use an ASIA pool server or if you are living in the US then you should use a US pool server to get the lower latency?

Also, notice this

Code:

021-12-21 11:36:09 Invalid config option --bitmain-fan-pwm: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-freq: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-voltage: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-ccdelay: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-pwth: '' is not a number
2021-12-21 11:36:09 Invalid config option --bitmain-freq-level: '' is not a number

and this below sometimes it doesn't have a fan power signal

Code:

2021-12-21 11:24:05 fan_eft : 0  fan_pwm : 0

The fan might be the issue that is why you have an invalid config option according to the above logs.

Try to upgrade it to the latest version and test it again if your issue doesn't solve then post the whole kernel logs again here.

Thanks for the quick reply.

I skip everything and follow your last advice and flash the latest firmware. It fixed the issue. But how can a firmware flash what seems to be a net_lost problem or fan problem ?

Or maybe it fixed the invalid config problem. But how did that problem happen in the first place?


edit : apprently the invalid config, fan_pwm and net_lost issue still exist. But its hashing for a solid hour without problem.

[BitMaxz]

Just ignore them if the miner is mining normally and hashing but according to Bitmain if you have that kind of issue it might be because of a connection issue.

Replug all fan cables and the ethernet cable is what they suggest. So try it and hope those invalids will be gone at least if not then just ignore them.

[Flyguy729729]

Hello. Now all 3 of my miners have the same problem. I have one miner without all the pwm and invalid config thingy. Zero errors or problem on the kernel. But after it starts hashing for 5 min, it just stops mining. :/

No idea why. All S19j pro.