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Hello,
It sounds like you’re facing a common issue where your Qt5 application is defaulting to PulseAudio instead of ALSA on Torizon OS. Let’s go through some steps to help you configure your application to use ALSA for audio playback:
-
Environment Variables: Double-check that the environment variables in your Dockerfile are set to prioritize ALSA. You can set the
QT_AUDIO_BACKENDenvironment variable toalsato explicitly instruct Qt to use ALSA. -
Qt Configuration: Ensure your Qt application is configured to use ALSA. This might involve checking the Qt multimedia backend settings. You can inspect the
qt.conffile or set the appropriate environment variables at runtime. -
ALSA Configuration: Verify that ALSA is correctly configured within your container. Use tools like
alsamixerto check and adjust audio settings. Ensure the correct sound card is selected and that the audio output is not muted. -
Access to Sound Devices: Make sure your container has access to the necessary sound devices. This typically involves adding
/dev/sndto the list of devices your container can access. You can specify this in your Docker run command or Dockerfile. -
PulseAudio Errors: The “Connection refused” error suggests PulseAudio might still be running or being called by default. Ensure PulseAudio is not installed or running in your container if you intend to use ALSA exclusively.
-
Testing: Use
aplaywithin the container to test audio playback independently of your application. This can help confirm that ALSA is functioning correctly.
By following these steps, you should be able to configure your Qt application to use ALSA for audio playback. If issues persist, check the logs for any additional error messages that might provide further insight.
I hope this helps! If you have any more questions, feel free to ask.
Best regards,
Toradex AI Assistant
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