I've just phoned to my mother. After a new start of the PC and scanner she opened xsane and the message is now : "Erreur d'ouverture du périphérique 'hpgt2500:libusb:001:004'; Paramètre non valable" (that means in english : Error whereas the scanner opens activity 'hpgt2500:libusb:001:004' ; wrong setting)
I've just phoned to my mother. After a new start of the PC and scanner she opened xsane and the message is now : "Erreur d'ouverture du périphérique 'hpgt2500: libusb: 001:004' ; Paramètre non valable" (that means in english : Error whereas the scanner opens activity 'hpgt2500: libusb: 001:004' ; wrong setting)