When I first started using the 9/12/2018 picroft image, I had issues configuring the audio. Initially the microphone didn’t work, and then, once I installed pulseaudio as was recommended by members of the community, my pi was silent. I just fixed my problem and I wanted to share the solution that worked for me. After installing mycroft on the pi and running the standard updates, I got to the command line and typed:
sudo apt-get install pulseaudio
This installed PulseAudio. For me, this fixed the issue that my microphone didn’t work, but my speakers had gone silent. To address this, I typed “alsamixer” and in the settings menu that appeared I set the master volume to 90%. After testing this function to confirm that it was working I edited the audio_setup.sh file in /home/pi so that these settings would run whenever the pi started. I included the following line at the bottom of the script:
amixer sset 'Master' 90%
Now the audio volume for my Mycroft is automatically set to 90% upon load.
I have a working Picroft. I hope this helps others who encounter the same issue.