Cannot suppress notification when a client connects to my vino server VNC

I am using vino-server in Bodhi Linux, an Ubuntu derivative which, in my experience, for most purposes (but not all) works the same as Ubuntu. When a client connects to my PC I get a notification. I want to disable them. The client is TigerVNC in Win 10, but I guess that is irrelevant. I have set org.gnome.Vino notify-on-connect to false. Since setting this from the command line did not seem to alter what I see in dconf-editor (at least immediately, I didn't tinker further with this), I also set this in dconf-editor, and rebooted. I have this. I don't know where else to look for. $ gsettings list-recursively org.gnome.Vino org.gnome.Vino prompt-enabled false org.gnome.Vino require-encryption false org.gnome.Vino use-alternative-port false org.gnome.Vino disable-background false org.gnome.Vino disable-xdamage false org.gnome.Vino alternative-port uint16 5900 org.gnome.Vino icon-visibility 'client' org.gnome.Vino authentication-methods ['none'] org.gnome.Vino network-interface '' org.gnome.Vino notify-on-connect false org.gnome.Vino mailto '' org.gnome.Vino lock-screen-on-disconnect false org.gnome.Vino use-upnp false org.gnome.Vino vnc-password 'keyring' org.gnome.Vino view-only false How can I disable these notifications?
It seems unlikely to do that at the vino level (even if there is a setting for that, apparently!). Perhaps with handling of notifications has some type of filtering. $ dpkg -l | grep notif ii gir1.2-notify-0.7:amd64 0.7.9-1ubuntu2 amd64 sends desktop notifications to a notification daemon (Introspection files) ii libnotify4:amd64 0.7.9-1ubuntu2 amd64 sends desktop notifications to a notification daemon ii libstartup-notification0:amd64 0.12-6 amd64 library for program launch feedback (shared library) ii libuv1:amd64 1.34.2-1ubuntu1.3 amd64 asynchronous event notification library - runtime library ii libzephyr4:amd64 3.1.2-1build3 amd64 Project Athena's notification service - non-Kerberos libraries ii notification-daemon 3.20.0-4 amd64 daemon for displaying passive pop-up notifications ii vlc-plugin-notify:amd64 3.0.9.2-1 amd64 LibNotify plugin for VLC