Sorry for the delay of my answer. > You should update your kernel. Ubuntu 14.04.4 uses kernel 4.2. Ok I tried to update my kernel with linux-image-4.2.0-41-generic + headers with apt-get. After rebooting my device all my peripherals are not working (wifi/bt/usb). Due to that I will work directly on my ARM target. I will try to fix the problem on x86 later. Thanks for your help. Arthur. -- 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