Erle-Brain3 Bluetooth BLE is not working.
sudo hcitool lescan
Set scan parameters failed: File descriptor in bad state
on the same hardware, use the original raspbian OS image (2017-04-10-raspbian-jessie-lite.img), Bluetooth BLE works.
but when using Erle-Brain3 OS image (Erle-Brain3-frambuesa-09-12-2016.img), Bluetooth BLE doesn't work.
tried many different ways, but still could not fix this problem. May I ask if somebody could help?