I refer (to the best of my knowledge) to the patch submitted in [1]. When upgrading from 4.1.5 to 4.1.6 (Arch Linux), my Lenovo N700 Bluetooth mouse stops working. Downgrading fixes, hence unlikely to be a hardware issue. When on 4.1.6 (bugged version) dmesg spams this every 3 minutes or so:- Bluetooth: SMP security requested but not available Please advise on additional details which may be required. [2] is my original bug report in my distro's channel, including the above details in a bit more verbose form. [1] - https://lkml.org/lkml/2015/8/14/369 [2] - https://bugs.archlinux.org/task/46006 -- 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