On re-checking this appears to be caused the authd(1) package, after removing authd normal password prompt reset is shown again in gdm.
https://github.com/ubuntu/authd -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/2120634 Title: GDM does not show password expiration or offer password change functionality. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/2120634/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
