This is exactly what it is displayed in attractmode console: "Failed to set DirectInput device axis mode: 1".
And that is spamming indeed in attractmode console mode.
The consequence is that SFML deactivates the controller and that is why attractmode is not registering any input.
Indeed my controller is registering itself as a Xbox 360 Gamepad Controller, but what's the point ?
The driver automatically installed by WIN10 is precisely Xbox 360 Controller and my joystick is indeed a Xbox 360 Hori joystick compatible with PC as well.
The joystick is perfectly working under WIN10 or any other game so why is SFML disabling it, it's out of my competence field.
The joystick concerned is Hori Real Arcade Pro EX
https://www.amazon.fr/Hori-Real-Arcade-Fighting-Stick/dp/B001GDONZSIs it a bug in SFML or linked to SFML implementation in attractmode ?
N.B.: The proposed fix is that same post it not working. The result is same issue but with more explicits controller concerned as mentioned by nclemenson.
Many thanks in advance