Hi Marcel, > Also should try the bluetooth-testing.git tree since it contains an > updated btusb.ko driver. I took the btusb.c from bluetooth-testing.git and compiled it into my kernel. The symptoms remain exactly the same, the output of dmesg looks identical, with the call to __set_isoc_interface still failing. Is there anything else I can try? Do you believe this problem has been introduced recently into the kernel? Thanks again! Regards, Carles -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html