Just upgraded from Jessie to Stretch, same issue. This used to just work $ eval $(gpg-agent --enable-ssh-support)
But ssh connections now fail miserably. I'm offered the ssh key pinentry popup, and then: > sign_and_send_pubkey: signing failed: agent refused operation I also tried to kill all that dbus-* things before retrying. I was provided with the curl-based pinentry popup but failed the same way. ssh-agent and/or hardcoding IdentityFile still works (hopefully) I also noticed that running gpg 2.1 $(gpg-agent --enable-ssh-support) automatically provides two of my keys. ssh-add -D does not seem to remove them from the (gpg)-agent. I guess those are the only two which were inside my agent at the time gpg 2.1 migrated them inside ~/.gnupg/private-keys-v1.d/ This may or may not be related to the issue. NB: I don't use systemd
