wait, i installed "ksshaskpass" .. now it works..IDK why 
and i want to know why..
ssh -T [email protected]
Hi Shnku! You've successfully authenticated, but GitHub does not provide shell access.
now tell me why? what is ksshaskpass?
solution: INSTALLING "KSSHASKPASS" FIXED IT
other sollution: stop-ssh-from-using-ksshaskpass-or-any-popup/26678