I am using a Creative Sound BlasterX Vanguard K08 keyboard. Keys such as turn up/down the volume, mute are working fine on the keyboard. The keyboard comes with 5 extra keys, namely, M1 - M5. I've tried to map the keys, but when I press them I get no response in any key mapping interface. Is it possible to activate them, so I can map them to whatever I want?
I can only find keyboard drivers for windows, though, in Ubuntu, it works out of the box on ordinary keys.
Btw I have ubuntu 18.04