USB C didn't work

I got new ubook 11’6”, overall my ubook is working properly.

Lately I noticed that I cannot use the USB type C. I never use the usb type c before because I know that it cannot charge. Lately I want to use the tye c USB to connct to projector. But it cannot detect the ubook. I have changed the hub, but still not detected.

I there any driver to fix this? Or is it a hardware malfunction?

Thanks