Booting up the PI3, have the DAC enabled (LED light is on)
doing a : speaker-test command, turns it off, and I need to reboot to get it back on
installing Modipy, and then issueing the command gst-launch-1.0 audiotestsrc ! audioresample ! autoaudiosink gives me a tone, LED stays on
What could be causing this?
That's totally fine. The LED turns off when the application stops sending audio data.
Best regards,
Daniel
Currently running idle, no application sending any audio data, LED is on.
When I run the speaker-test, LED goes out :
speaker-test 1.0.28
Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
Sine wave rate is 440.0000Hz
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 16 to 131072
Period size range from 8 to 65536
Using max buffer size 131072
Periods = 4
Unable to set hw params for playback: Invalid argument
Setting of hwparams failed: Invalid argument
And no sound is played at all
That's also normal when you booted. It stay on until you first play something.
Best regards,
Daniel
Running the command :
gst-launch-1.0 audiotestsrc ! audioresample ! autoaudiosink
produces a tone and LED goes back on, indeed until I stop the sound
using aplay to play a WAV file produces no sound either, unable to set hw params
You're launching a daemon that connect to the sound card. This blocks access from other programs like aplay. There can be only one program accessing the sound card at the same time.
Best regards,
Daniel
On a fresh install, neither speaker-test or aplay produces any sound, gstreamer hasn't been installed at all at that point. It's not a major issue, but I thought I was doing something wrong or the card was damaged. After installing modipy and getting sound out with gstreamer I was a happy man.
Most likely you're trying to play back mono files with aplay which won't work. I recommend using mplayer instead of aplay.
Best regards,
Daniel