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DIGI Problems with aplay

Sven Sternberger

August 10, 2014 20:15

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Hello!

I have a strange problem. I installed volumio. I updated the firmware and
the OS.

I can see my hifiberry with aplay -l. But if I start "check-system.dac"
there is no sound and after a while aplay stops with

aplay: pcm_write:1710: write error: Input/output error

And now the STRANGE part.

On my denon receiver I see all the time "signal unlock"
Then I call mplayer with the following parameter

mplayer -ao alsa:device=hw=1,0 foobar.flac

and the sound start and plays perfectly, the
"signal unlock" disappears.

afterwards check-systems.dac plays the "beep"
and shows no error. The volumio software also
works without problems

so after each reboot I have to manually call
mplayer to get my Rasberry/Hifiberry in
a usable state.

Any ideas what could be the problem?

regards

Sven

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3 comments

• 0
  
  HiFiBerry team August 11, 2014 06:54

  Hi Sven,
  
  can you post the output of "dmesg". I've had a similar problem before where a software tried to use 32kHz sample rate that does not work on the Digi.
  
  Best regards
  
  Daniel
• 0
  
  Sven Sternberger August 11, 2014 17:24

  Hi
  
  This is the dmesg output after boot:
  http://pastebin.com/FhCWh5ez
  
  when I start check-system.dac
  the following lines will be added:
  > [ 383.955929] bcm2708-i2s bcm2708-i2s.0: I2S SYNC error!
  > [ 404.073868] bcm2708-dmaengine bcm2708-dmaengine: DMA transfer could not be terminated
  
  now I found in the mpd.conf
  
  audio_output {
  type "alsa"
  name "Output"
  device "hw:0,0"
  dsd_usb "yes"
  }
  
  I replace "hw:0,0" with "hw:1,0", now my device works directly after boot :-).
  The only strange thing is that aplay don't work before music is played with mplayer or mpd (with the new config)
• 0
  
  HiFiBerry team August 12, 2014 05:01

  Hi Sven,
  
  we have seen several issues with aplay. It sometimes seems to set incorrect samplerates or bit depths. It is possible that something like this happend here. Therefore I recommend using mplayer.
  
  Best regards
  
  Daniel