No volume - Hifiberry DAC+ DSP


All of sudden today, my Raspberry Pi with a Hifiberry DAC+ DSP as a hat has stopped working.
To be more precise:

  • it is still recognized in Roon;
  • it looks like it is functioning perfectly
  • but there is no sound coming out of the speakers.

I checked and the amp and speakers are working (with vinyl or digital).
When I use Audio USB on the Raspberry Pi, it also is working.

So I would assume it’s a DAC+ DSP issue?
Any idea?

Here’s the Feedback ID for the setup that has no volume: 3542559dabde40f2

Thanks in advance!

So it seems that, after re-flashing, it works again.
I still cannot explain why it stopped working though.