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Raspberry Pi Forum No audio output anymore - card maybe fried?
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Forum Thread Details
  • State Not Answered
  • Replies 1 reply
  • Subscribers 681 subscribers
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  • wolfson
  • aif1
  • pi
  • output
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Related

No audio output anymore - card maybe fried?

Former Member
Former Member over 11 years ago

Hi,

 

up until recently, my Wolfson Pi audio card worked flawlessly with all the AIF1 audio outputs (I didn't test the SPDIF output). Now since I came back from vacation, audio output doesn't work anymore. I can record things from the DMIC and Line in just fine. But trying to play back anything only results in silence. I tried all possible ports (Headset, Line Out, Speakers) and everywhere it's the same.

Routing the tone generator to any of the outputs works, however. Also routing the DMIC input to any of the outputs works flawlessly. Only the actual audio input via AIF1 (i.e. the R-Pi) seems to be broken.

Running debug_output.sh, everything seems to be alright. I've attached the 3 debug output files in case anyone wants to look.

 

Any help would be appreciated.

 

P.S.: I've done some kernel hackery before to make the card output four channel audio on the line out and speaker output, which has worked fine. (Mainly modifying some files to accept 4 instead of only 2 channels). I doubt that this could have broken anything, since it only changed the data that was sent over I2S. Anyway, I've switched back to the provided wolfson kernel just to be sure my changes didn't introduce any unwanted behaviour. Just thought I'd also mention it for completeness.

Attachments:
regdump_5102.zip
regdump_8804.zip
dapm_dump.zip
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  • Former Member
    0 Former Member over 11 years ago

    Hi Arno,

    just looked to the reg-dumps. I had the same effect here which took ages to get solved... The 5102 is not initialized and all values are 0x0000. And here's my wild guess: You're using LIRC by chance? It grabs by default two GPIO pins. By default this are colliding with the Wolfson (you can use the GPIO14/15) for this. If not an other software probably uses the GPIOs. At least this is a starting point. to look for.

     

    If this does not help you might try to use a stock image to test the Wolfson sound card. Or roll back to a known good backup image. Just in case of byte-rotting or other kind of data corruption on your SD-Card.

     

     

    Best regards
    TF

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  • Former Member
    0 Former Member over 11 years ago

    Hi Arno,

    just looked to the reg-dumps. I had the same effect here which took ages to get solved... The 5102 is not initialized and all values are 0x0000. And here's my wild guess: You're using LIRC by chance? It grabs by default two GPIO pins. By default this are colliding with the Wolfson (you can use the GPIO14/15) for this. If not an other software probably uses the GPIOs. At least this is a starting point. to look for.

     

    If this does not help you might try to use a stock image to test the Wolfson sound card. Or roll back to a known good backup image. Just in case of byte-rotting or other kind of data corruption on your SD-Card.

     

     

    Best regards
    TF

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