Re: GekkoScience NewPac / Terminus R606 (BM1387) Official Support Thread
Just a heads up that for me, updating from 0.19.0.1 to 0.20.0 bitcoin core gave this error in cgminer 4.11.1, "JSON failed to decode GBT". Im just running the NewPac against local wallet so anyone else doing the same may have trouble if they update the local wallet.
Yes, you are right, I can confirm, core did a change in response of gbt.
This afect not only cgminer (vh) also the original and ckpool.
I switched back to 19.1 and wait for core 0.20.01
I've also been mining solo with NewPacs for a long time. Finally went to upgrade my 0.19.1 node to 0.21 and ran into this. It's still a thing, and core doesn't see it as something to fix on their side (rightfully so, as described in issue 19182). So, I guess the cgminer fork supporting GS miners needs to be updated. @vh is this something you can do? Looks like we just need to not require the coinbaseaux flag in the GBT response.