Question: Does Bluetooth Output use the Audio output from the DAC Hat?

[TheOldPresbyope]

You can run the command below to turn off the Bluetooth Renderer so it does not start during reboot.

Code:

moodeutl -q "update cfg_system set value='0' where param='btsvc'"

The reason there is no automatic protection for the condition where BT Renderer is on but no BT adapter exists is that AFAIK there is no test to determine whether a BT adapter exists and is enabled. If there is such a test I'll try to repro it.

Doh. I never gave this a thought. 

Maybe this?

In a quick test here on an RPi3A+

1. Integrated BT adapter on:

Code:

pi@moode73-3a:~ $ sudo hcitool dev
Devices:
    hci0    B8:27:EB:FB:1A:BE

2. Integrated BT adapter off:

Code:

pi@moode73-3a:~ $ sudo hcitool dev
Devices:

Regards,
Kent