BalenaSound analog audio output vs. hdmi

Hallo, I just installed BalenaSound and noticed that the audio output goes through the RPi 3 B+ HDMI connection to the monitor speakers instead of to the analog audio jack. When rebooting without HDMI monitor, the audio output goes to the analog audio connector. Is there a setting that can force the audio output to the analog connector?

Best regards

Have you tried custom configuration variable?

RESIN_HOST_CONFIG_hdmi_ignore_edid_audio = 1

in your image configuration panel in the portal?

This parameter did indeed do the job, for which I thank you. In the tutorial there was an instruction to turn off the onboard audio in favor of a DAC (HAT) which is very desirable because the RPi 3 analog audio is of dubious quality.

I had searched but I couldn’t find the parameter you mentioned in this starter app and the Balena documentation online. Based on your example and some googling, I found a useful list to customize the RPi config.txt with several variables. A list of freely selectable customer variables that can be added like the one mentioned above can be found on

Best regards,

Glad to hear!

There is documentation for the topic I’ve used as reference:

If your device has a supervisor version above 1.0.0, it has support for modifying the values in config.txt remotely using configuration variables.