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Raspberry Pi 2 with Hifiberry AMP

Paul Moorhead

March 02, 2015 19:52

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AMP was working fine with Pi B+ and Raspbian. Tried it with Pi 2. AMP not showing up in aplay -l
tried upgrading previously image with apt-get update, apt-get upgrade, rpi-update and reboot.
also tried downloading latest Raspbian Wheezy image.
what am I doing wrong? this site seems to suggest that it would just work out of the box.

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8 comments

• 0
  
  HiFiBerry team March 03, 2015 05:59

  Hi Paul,
  
  did you configure it as shown here?
  https://www.hifiberry.com/guides/configuring-linux-3-18-x/
  
  Check the commands in the "device not recognised" section.
  
  Best regards
  Daniel
  
• 0
  
  Paul Moorhead March 03, 2015 19:23

  great thanks. that sorted it. What's missing from your instructions on upgrading from a Pi, is that as well as the rpi-update step you need to add the line to the config.txt dtoverlay=hifiberry-amp
  
  thanks.
• 0
  
  Paul Moorhead March 03, 2015 20:26

  actually... I take it back. aplay -l now displays the hifiberry amp correctly, and mpd appears to play music, but no audio output to my speakers. tried two different pi 2s and 2 different hifiberry AMPs, so I'm still not configured correctly.
  
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  Samuel Darby March 03, 2015 22:50

  I had a similar scenario (but with arch linux). Eventually I found that alsamixer showed the main channel was muted.
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  Paul Moorhead March 03, 2015 23:20

  thanks for the suggestion but that doesn't seem to be the issue. Do the mpd.conf settings change from the Pi 1 values? Does it need a more powerful PSU?
  
• 0
  
  HiFiBerry team March 04, 2015 05:39

  Hi Paul,
  
  the Amp is seen by aplay -l, but you get no sound? What kind if power supply are you using?
  What is the output of amixer?
  
  Best regards
  Daniel
• 0
  
  Paul Moorhead March 04, 2015 21:44

  changed the power supply and it now works. I'm using old Dell laptop power supplies (of which I have many). For some reason one of them can power the Pi + AMP, but with the Pi 2 + AMP, it all appears to work, but no sound. Other similar (but not identical) dell psus are working fine. Figure that one out. Almost like the fact that a photographic flash of the right kind can cause a Pi 2 to reboot.
  
  All seems to be good now thanks.
• 0
  
  HiFiBerry team March 05, 2015 05:36

  Thank you for the feedback.
  
  Enjoy your sound!
  Daniel