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Installing a DAC2 HD on RPi 3b / HifiBerryOS

Fliflofla

January 15, 2021 22:03

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Hi,

I just purchased a DAC2 HD for my RPi 3b running the latest version of HifiBerryOS. However, I have problems configuring it.

On the HifiBerry page, it shows "Dac + Zero...", which is the first strange thing, and the volume control cannot be moved from zero (muted). Of course, there is no sound...

I did some reading and  tried adding a /boot/config.txt file with dtoverlay=hifiberry-dacplushd (with and without force_eeprom_read), but that just causes the system to reboot endlessly... Am I doing things right? I find it very strange that I had to create the config.txt file, since /boot/ contains no files.

Cheers

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4 comments

• 0
  
  HiFiBerry team January 16, 2021 06:39

  If /boot contains no files, there's some problem with your installation. Try a fresh installation. /boot should be there and populated with a lot of files.

• 0
  
  Fliflofla January 16, 2021 10:00

  Thanks for the quick help!

  I downloaded the HifiBerryOS image for RPi 3 again, flashed it, booted it. Logging on the RPi with ssh showed that the /boot folder is populated with plenty of files. Already an improvement compared to yesterday.

  However, another problem appeared right away. All files within /boot seem to be read-only. My solution was to open the SD card on my computer. This mounted three partitions, one of which contained all the boot files in an editable way. I replaced the line

  dtoverlay=hifiberry-dac

  by

  dtoverlay=hifiberry-dacplushd

  in the files config.txt. I did not need to add

  force_eeprom_read=0

  This information may help others, seeing as the expected way to edit /boot/config.txt is not described in the documents I found (mainly https://www.hifiberry.com/docs/hifiberryos/setup-hifiberryos/ and https://www.hifiberry.com/docs/software/configuring-linux-3-18-x/).

  The result is that the sound now works :)

  Edited by Fliflofla January 16, 2021 10:07
• 0
  
  HiFiBerry team January 16, 2021 11:30

  Good to hear. However, you should not have to edit the file by yourself at all. Not sure, why this happened. Is there anything else connected to the Pi?

• 0
  
  Fliflofla January 16, 2021 16:30

  It's the only HAT connected to the RPi.

  Like mentioned above, on my second installation, the config had an overlay for "hifiberry-dac". I did not bother to see if that would work, since I knew I needed "hifiberry-dacplushd".