Back when I used 10.04 LTS and would change my system volume via custom keyboard shortcuts I would always get a nice volume level box that would appear to the top right corner of the screen. I had this also happen when I changed my display brightness.
Now I am on 12.04 and using Unity desktop. When I change my display brightness the brightness level box appears as expected like so
but when I change my volume level via custom keyboard shortcuts I get no volume level box showing up indicating a volume change has taken place. All I see is that little panel notification speaker icon's sound waves change a little bit. 3 levels is not enough feed back though.
So how do I get a nice volume level box to show up when changing the volume?
UPDATE 1 Tried to fix the keyboard shortcuts using aleprovencio's suggestions but it broke what already did work.
Weird I am able to get the volume level box to show up when I use the volume wheel on my computer
but I want to make it show up with the custom keyboard shortcuts I created in Ubuntu Tweak like in the image below:
Now the question is:
What are the system commands that trigger both the volume changes and the volume level boxes to appear?