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[nix_on]

I'm using sgminer and want to try my gpu's just for fun  
I good know it's not profitable at all
version v0.11.0

bitcoin.conf
rprcallowip=127.0.0.1
rpcport=66655
server=1
rpcuser=user
rpcpassword=passworsd

What I'm doing wrong or maybe v0.11.0 doesn't support solomining ?

[GriffinHeart]

Okay, lets start, your rpcport is wrong, it's most usually "8332" also, make sure that you are putting your rpcuser and rpcpassword in the respective "-u and -p" variables.