I used to use x2go for tunneling my entire remote desktop over SSH, but recently trying it yielded no success.
This is the error:
Connection failed. * keychain 2.8.4 ~ http://www.funtoo.org * Found existing ssh-agent: 7185 * Known ssh key: /home/w/.ssh/id_ecdsa
I am running keychain to manage my ssh keys, but I don't see that being an issue. I also have google authenticator setup (2-factor auth), but even disabled that in PAM to confirm that was not the culprit.
I don't see any errors in the logs and can see that it does take the public key, but beyond that, I haven't a clue what else could be going on.
ssh-add -l
... and when disabling GA, did you also change the/etc/ssh/sshd_config
fromChallengeResponseAuthentication yes
toChallengeResponseAuthentication no