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AMP2 and GStreamer Apps

Ryan

September 11, 2020 04:01

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I have an AMP2 on a Pi4 running latest Raspbian (PI OS now) Buster, clean install.

Initial setup of the AMP2 was very easy and I have sound from my speakers when playing something from the desktop (random youtube video from the browser).

I'm trying to get Pithos up and running (which I think is a GStreamer app) and although it looks like it's playing, no sound.  I installed another GStreamer app (Totem) and experience the same thing.  Looks like it's playing but nothing.

Anyone have any ideas on where to start?  My google-fu is failing but definitely getting some hits on GStreamer apps and sound issues.  I'm not sure if I'm just totally overlooking something easy (like missing packages) or what.

Would appreciate a shove in the right direction, perhaps some suggestions on what logs to check or any ideas really.  I'm stumped.  Thanks.

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5 comments

• 0
  
  HiFiBerry team September 11, 2020 05:01

  It might be either a problem with your /etc/asound.conf or some other program is already accessing the sound card:
  https://www.hifiberry.com/docs/software/check-if-the-sound-card-is-in-use/

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  Ryan September 11, 2020 20:31

  I ran through the sound card in use check, but came up empty.  I find it strange that sound works as expected in the browser and VLC (mp3 file) but when playing that same mp3 file in Rhythmbox (another gstreamer app) no sound is produced. 

  It may very well have nothing to do with the AMP2 and everything to do with gstreamer apps, likely something that isn't configured on my end.  I think I'm going to need to hook up an HDMI with sound to the Pi (I'm running headless now) and start fresh with the OS and remove the AMP2, just see if gstreamer apps work over hdmi with sound.

  Thanks for the help, if anyone else has any ideas I'm all ears.

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  Ryan September 12, 2020 04:11

  So I flashed latest Buster again to start clean, and hooked up the Pi without the AMP2 to my TV via HDMI... got sound via VLC and Rhythmbox over HDMI.  Popped on the AMP2 and configured the Pi to see it, sound from VLC but nothing from Rhythmbox.  In all cases, same mp3.

  Seems to be something with gstreamer apps, was hoping someone had experienced this before and knew a fix.  I'm going to keep digging to see if I can solve it but who knows.

  But I did run across your product from 2019 "USB interface board" and was bummed it's not currently available:

  https://www.hifiberry.com/docs/hardware/use-your-hifiberry-sound-card-with-your-mac-or-pc/

  I hope this is available soon!  I would love to try it... 

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  Ryan September 12, 2020 04:35

  OK, last post tonight, promise... :)

  Found this thread from last year that basically exactly describes the issue with gstreamer apps.  I posted in the hopes someone has an update:

  https://www.raspberrypi.org/forums/viewtopic.php?t=230794

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  HiFiBerry team September 14, 2020 12:33

  Can't say anything about it except we're using gmrender-resurrect on HiFiBerryOS without problems. This is based on GStreamer.