Problem run on display :0

9 September 2018

$ gparted

         No protocol specified

         (gpartedbin:16220): Gtk-WARNING **: 23:53:14.934: cannot open display: :0

$ xhost si:localuser:root

          localuser:root being added to access control list

$ gparted

          Gtk-Message: 23:54:15.927: Failed to load module "canberra-gtk-module"
          ======================
          libparted : 3.2
          ======================