CentOS

I had a keyboard that has a collection of function keys, multimedia funcionality, email etc. All open up in combination of the "fn key"(or better : they should open)

Can I set this to work somehow?

In X11? If so, have a look at these (I thought they looked useful: https://wiki.archlinux.org/index.php/Ke ... on_in_Xorg and https://help.ubuntu.com/community/Custo ... efinitions)