Estou tentando abrir o arquivo /etc/group como raiz (para editar), mas assim que digito
gksu gedit /etc/group
Isso me dá
Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
(gedit:6959): Gtk-WARNING **: cannot open display: :0.0
Como posso resolver isso?