- Last edited one year ago ago
Audio troubleshooting grid
Some typical issues related to the audio domain are listed below. Solutions or debugging methods are proposed for these issues.
|The sound card does not probe.
|If one or more audio interfaces are missing, the sound card cannot probe:
aplay: pcm_write:2030: write error: Input/output error
This error occurs on an audio playback, when audio samples are not output. A possible cause is a wrong configuration of the audio interface:
Refer to Soundcard configuration
Error -16 setting sai_ck parent clock. Active stream rates conflict
The two SAI sub blocks which are connected to the audio codec, share their master clock on Disco and Evaluation boards. When running both capture and playback on the codec, the chosen sampling rates must be multiple of each other, because of this dependency. If sampling rates are not compatible, an error is issued.
|Silence is recorded from headset microphone.
|The following points have to be checked:
|The capture level is too low at maximum volume.
|The ALSA plugin softvol  can be used to boost the volume. However, this may lead to saturation.