[Tiger75]

Fixed! 

Was a gnome feature blocking the keys. Found it after ages of searching ask.ubuntu and trial en error:

• Chek the keys with: sudo showkey -k
  
• Then you need to change the keys in gnome:
  • Install the visual key editor: dconf-editor
    
  • Navigate to org/gnome/settings-daemon/plugins/media-keys
    
  • Remove the default values and replace with ['']
    
• Then you need to change it in one more place, you can read more in ask.ubuntu:
  • Find the keys that you need that have default values: gsettings list-recursively org.gnome.settings-daemon.plugins.media-keys | grep thekey
    
  • Blank the keys with: conf write /org/gnome/settings-daemon/plugins/media-keys/thekey "''"
    
  • Check which keys have been set: /etc/systemd/system/cockpit.socket.d/listen.conf
    
• reboot