Variation on that advice worked!

Rebooted again without the dtparam=audio=on and audio_pwm_mode=2 commented out. 

I get headphones (c 1), hdmi (c 0), and audioinjector-pi-soundcard (c 2) as choices in playback options on the web interface. Headphones works. Haven't tried HDMI. 

Started alsamixer with c 2 parameter,  Unmuted Master Playback ZC and Output Mixer HiFi. At first I didn't think it worked but it had just paused playback. Got music coming out of the audioinjector finally!

Thanks!

On Fri, Jan 7, 2022 at 3:38 PM Randall Reichenbach <randaji@gmail.com> wrote:

Instead of amixer, try:

alsamixer -c 0

which will give you a graphical interface where you can unmute the output mixer hifi.

On Fri, Jan 7, 2022 at 1:10 PM Daniel F. Taylor via People <people@lists.audioinjector.net> wrote:

Running Volumio 3.179 on an older Pi (2 I think? Maybe 3?) with Audioinjector Stereo sitting on top... is there a way to make it use the audioinjector stereo card? Volumio itself works but I can't get the method described here http://forum.audioinjector.net/viewtopic.php@f=5&t=3063.html to send sound through the card...

I have editing /etc/config.text to read

volumio@volumio:~$ cat /boot/config.txt
initramfs volumio.initrd
gpu_mem=32
max_usb_current=1
#dtparam=audio=on
#audio_pwm_mode=2
dtparam=i2c_arm=on
disable_splash=1
hdmi_force_hotplug=1
force_eeprom_read=0
dtoverlay=audioinjector-wm8731-audio
include userconfig.txt

I get this after reboot:

volumio@volumio:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: audioinjectorpi [audioinjector-pi-soundcard], device 0: AudioInjector audio wm8731-hifi-0 [AudioInjector audio wm8731-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

The recommended mixer command doesn't seem to work:

volumio@volumio:~$ amixer sset 'Output Mixer HiFi' toggle
amixer: Unable to find simple control 'Output Mixer HiFi',0

I get 'audioinjector-pi-soundcard' as my only available output device on the volumio web interface

Prior to making these changes, I get the expected audio output from the Pi's built in headphone jack.

After making these changes, I get no audio output from headphone jack, or output jacks on Audioinjector card, while volumio web interface is showing a song playing at max volume.

Any ideas?

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