Hello, >> To make sure, I have also performed some additional tests. The problem >> seems unrelated to the gadget being used: I have tried various >> combinations (zero, ethernet, etc.), even setting up an ACM device >> using configfs, and the result is the same: a host detects the device >> for a brief moment, but nothing after that. > > Odd. At Gil (now in Cc) has at91 working for him on his board. Gil, care > to confirm ? Since this is a SAMA5D31 device, it uses atmel_usba_udc instead of at91_udc. And thank you, I will try your suggestions later today. Bálint -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html