To use my PGP key I always have to enter my passphrase. But as it happens, I have to unlock the key only once for every session. The desired behaviour would be, that I have to unlock the key each time I want to use it so the passphrase is not remembered for the whole session.
The dialog for entering the passphrase provides a checkbox "Automatically unlock this key, whenever I'm logged in" but that is also not what I want. I recall this dialog in older versions of Ubuntu providing more options, like this:
But these options are never provided to me. So how can I configure Seahorse/GPG/Ubuntu to always locking the key after usage?