I recently installed Alexa on my raspberry pi using the instruction provided by amazon (https://developer.amazon.com/de-DE/docs/alexa/alexa-voice-service/register-a-product.html).
I succesfully connected my USB speaker/microphone (one device) to the raspberry pi. While watching a youtube video or other testing (aplay...) my USB speaker is used for audio output, but responses from alexa can only be heard while connecting a speaker via hdmi. The output via the 3,5mm jack is also not working with alexa. That's not very practicle since I don't want to always connect my TV for hearing alexas response.
I already tried some suggestions of other posts (ex. https://github.com/alexa/avs-device-sdk/issues/500), but none of them worked for me.
I hope someone can help me with this issue, since everything else is working fine.