When I change the volume using my laptop's dedicated volume-control buttons, a pretty notification is displayed on the top right.
I have recently started using my laptop with a dock. My external keyboard does not have dedicated volume buttons. I have mapped the scroll-lock/pause-break to "amixer -D pulse sset Master playback 5%-/+". Doing so does indeed change the volume, but now the volume-change notification does not display. How do I make the notification appear when I change the volume using shortcuts on my external keyboard?