Same issue started on my desktop machine after upgrading to 25.10. Symptoms are not exactly the same on my side as I have two ssh-ed25519 keys, and strangely only one is impacted.
When troubleshooting, it is stuck on same step as for you: debug3: sign_and_send_pubkey: signing using ssh-ed25519 SHA256:********** Checking processes, I see that ssh-add command is stuck. Default SSH key agent of Ubuntu is provided by Gnome through gcr-ssh-agent.service, so it may be the actually affected package. As a workaround, I disabled it using : systemctl --user disable --now gcr-ssh-agent.service systemctl --user mask gcr-ssh-agent.service systemctl --user disable --now gcr-ssh-agent.socket systemctl --user mask gcr-ssh-agent.socket A restart of the machine may be needed as SSH_AUTH_SOCK env variable is not directly updated. This now works using SSH agent of openssh-client package. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2130448 Title: ssh command in 25.10 fails to connect with RSA key and waits To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/2130448/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
