I’m using a PI3 with the volumio-2.001-2016-10-15-pi.img image with a Hifiberry DAC +.
I have got the same issues as described here: https://volumio.org/forum/hifiberry-dac-sound-t4769.html, But after editing /etc/config.txt and rebooting the PI, the UI shows Hifiberry DAC Plus as Output Device and DAC model. But I still can not configure the mixer control and mixer control name, the Combo box just disapears, when clicking it.
If I try to play a mp3, I get 5 times the error message: Error: failed to open audio output.
I found this: https://github.com/volumio/Volumio2/issues/615, but my /etc/modules already hat this entry.
I tried also this: https://support.hifiberry.com/hc/en-us/articles/205377651-Configuring-Linux-4-x-or-higher, but after removing the line dtparam=audio=on, aplay -l did not found any sound card at all.
I found the topics https://volumio.org/forum/hifiberry-digi-not-working-with-new-volumio-t4961.html and other, but no solution
Just to see my Hifiberry is working, I tested it with this test image https://www.hifiberry.com/build/documentation/sd-card-images/, but it worked only on a PI2. So my Hifiberry card seems to be ok.
Any idea, what I can do to get it running ?