I'm on holiday and I'm mining with my Notebook with 571 GB.
I've resolved the block number 1904 and the output of the miner was this! Is there something strange!?
That's the first line of the block 1904 until the 1905:
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
New best: 239199528940891303:1722201
Submitting share
{"result":"deadline: 606975"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
New best: 239199528940891303:896706
Submitting share
{"result":"deadline: 261292"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
{"height":"1904","generationSignature":"379aab81dac27e2fa22f5ebdc836be254c357f88
c0fb546fba50be1c36b681d5"}
New best: 239199528940891303:1234179
Submitting share
Error: Failed to submit nonce
{"height":"1905","generationSignature":"48919c4f7eee064d2b47070db5e95281a5bff823
13d2b6736fd18c937f577c6b"}
I've also resolved the block 1896, so two blocks in a row after days with nothing! Is it luck!? I don't see a low deadline!
You submit a share for every block your miner sees. Every miner submits their best share. Lowest deadline gets the block reward.
As your miner scanned your HD, it submitted your best share then continued scanning and found a nonce that gave a better solution/deadline so it submitted that share which lowered your deadline. This is normal. Your error came when you tried to submit a share right when the block was being solved and the chain was moving to the next block. Think 'stale' share...