A further observation:
When a bluetooth headset is switched on and connected via the drop-down
menu in the bluetooth icon, the mode sometimes appears as the Digital
Stereo (HDMI) options. Using the Volume Control - Configuration tab to
choose Off for the Built-in Audio allows the bluetooth
Even when the system concedes to detect the Built-in Speakers, a Mode
window appears offering a choice of Stereo or Dolby 5.1 that belongs to
the HDMI output via the Display Port. It is necessary to plug in a set
of headphones in order to select between the Speakers or the Headphones
and update
