Setup Raspberry Pi 3 Sound - on Fedora 23 Minimal version

This article explains how to properly setup Raspberry Pi 3 Sound, on Fedora 23 Minimal version (but it should be usable for other distribution).
If you need to install or complete your Raspberry Pi 3 installation on Fedora 23 Minimal version, for the most lightweight, you can read part 1, and part 2 of my articles.


Update the /boot/config.txt configuration file, to update the Device Tree
sudo echo "dtparam=audio=on" >> /boot/config.txt

Ensure Sound module is loaded at boot time
sudo cat <<EOF > /etc/modules-load.d/sound_bcm2835.conf
# Loads Raspberry Pi 3 sound module at boot time.
snd_bcm2835
EOF

Add your no-root user in audio group (adapt user name)
usermod -aG audio bsquare

Reboot the Raspberry Pi 3.


Install some more packages
sudo dnf install alsa-utils gcc

Test sound on analog output
cd /opt/vc/src/hello_pi
sudo make -C libs/ilclient
cd hello_audio
sudo make
sudo ./hello_audio.bin

Test sound on HDMI output (after previous instructions)
sudo ./hello_audio.bin 1

All the following instructions can/should be executed by the no-root user.

List availables soundcards
aplay -L

List available sound controls
amixer scontrols

Define the analog as default output (possible values: 0=auto, 1=analog, 2=hdmi)
amixer -c 0 cset numid=3 1

Define the volume (adapt to your needs)
amixer -c 0 sset 'PCM' 95%

Check sound is working properly
speaker-test -t sine -f 600

Check sound is working properly - alternative
speaker-test -t wav -c 2

Check sound is working properly - alternative
aplay /usr/share/sounds/alsa/Front_Center.wav

That's it, your Raspberry Pi 3 Sound hardware is now fully operationnal.