I just sort of solved it manually.
I set the Media keys to super + the matching key.
I then edited the following setting using dconf-editor.
gsettings get org.gnome.settings-daemon.plugins.media-keys
Where I removed the the <super> leaving just AudioRaiseVolume for example. (So <super>AudioRaiseVolume became AudioRaiseVolume).
I just sort of solved it manually. settings- daemon. plugins. media-keys AudioRaiseVolum e became AudioRaiseVolume).
I set the Media keys to super + the matching key.
I then edited the following setting using dconf-editor.
gsettings get org.gnome.
Where I removed the the <super> leaving just AudioRaiseVolume for example. (So <super>