I recently installed Ubuntu 18.04 on a laptop Toshiba S55 A5295. I want to "lock" the FN key function so I can access the media, brightness, and volume buttons directly without having to press theFN key each time. As you can see in this image, those are the most important and prominent functions of those keys.
There is no option on the BIOS to do that but I just recently migrated from Windows and there I had the option (using Toshiba software) to swap that fuction. For example I also have a Logitech K800 and using Solaar there is an option to swap the fuction of those keys on that keyboard.
Is there something similar that I can do to do that?