Comment 5 for bug 639690

To test this: create a user with autologin enabled, and register or log into an Ubuntu SSO account.
In this case, the "default" keyring will be used, either by adding the credentials into that keyring if already exists, or asking for a password in order to create it.

Also register or log into an Ubuntu SSO account with a user with no autologin.
In this other case the "login" would have been already created and that will be used.