If you use bitcoind or CLI environment, did you check whether you actually mine block but become stale?
As far as I could see, I never mined a block.
Did you follow this guide (which is meant for ASIC) or other one (which use bfgminer)?
I followed
Solo mine testnet bitcoins with bfgminer, Bitcoin Core, and a CPU (but somehow ended up posting in this thread).
If you have all the cores screaming running the SHA did you have enough CPU power left over to do the rest and get it out to the world.
I assume that's not a problem, Linux multitasking should be able to handle this. And I used
nice for the miner.
The other half of stale is networking. How many nodes is your node talking to? If there is a lag there and more nodes see the other block then you loose.
If that would be the problem, I would have expected to see orphaned blocks, right?
Sure, let's do it. Sorry, only just revisited this thread again.
Thanks! I'll PM you the details (and let's switch back to
the correct thread).