Please see https://wiki.ubuntu.com/NotifyOSD#org.freedesktop.Notifications.Notify stating that if the notification-daemon is "notify-osd" values for expire_timeout are ignored.
Please see https:/ /wiki.ubuntu. com/NotifyOSD# org.freedesktop .Notifications. Notify stating that if the notification-daemon is "notify-osd" values for expire_timeout are ignored.