I have attached an external monitor to my macbook pro running ubuntu 16.04. The monitor is an HP S2032.
The monitor uses a VGA cable connected to my macbook’s thunderbolt port using a VGA to thunderbolt converter.
When I use OS X the monitor works well and the buttons on the monitor(menu, up, down etc) function as expected, however when I use Ubuntu, although the monitor “works” there is a constant box displaying “Input Not Support”. In addition to that the buttons on the monitor do not function.