Precision M4700: Bluetooth radio no longer controlled by hardware switch despite correct BIOS setting
I noticed that since a few weeks, my Bluetooth radio (Dell Wireless 380) is not longer controlled by the hardware switch, nor by the Dell Smart Settings "airplane mode". The radio can only be turned on or off from the Bluetooth Settings page (Bluetooth Device icon).
I have made sure that the corresponding BIOS setting is correctly set.
I have upgraded to Bios A08 a few weeks ago (the problem may have started from there ???), and I installed the latest Broadcom/Dell Wireless 380 drivers just now with no improvement.