X86 Hardware issues (Graphics, WiFi, Onboard Sound, external DACs, Disks, BIOS/UEFI Boot problems etc.)

Using Volumio x86 latest version on an old mac mini.
Everything working beautiful.
As I connected this to an big TV screen with a remote keyboard/mouse, would like to increase mouse cursor size.
Being trying with
$ gsettings set org.gnome.desktop.interface cursor-size [sizeInPixels]
command, which does not return any errors, but cursor keeps same size.

Any help, please?

Gracias