Quick installation guide to enable the HiFi Shield audio output on Ubuntu.
- Assemble the C1+ with the HiFi shield, attach a USB keyboard, USB mouse and HDMI monitor, then power up the system.
- Use the ODROID utility to resize the eMMC/SD disk partition.
- Use the ODROID utility to update the kernel. I got version 3.10.80-125 when I did this.
- To ensure that the HiFi shield kernel modules are loaded on boot, edit the file /media/boot/boot.ini by uncommenting this line:
setenv enabledac "enabledac"
- To ensure that the HiFi shield becomes the default “sink” for the pulseaudio daemon, edit the file /etc/pulse/default.pa by by adding this line at the end:
- To enable applications such as mpg321 to use the HiFi shield even when no pulseaudio daemon is running (e.g. from a cron job),
add one more line to the end of the file /etc/pulse/default.pa :
suspend-sink alsa_output.platform-odroid_sound_card.5.analog-stereo 1
Note: Applications like mpg321 will start a pulseaudio daemon if there isn't one running already. However, the HiFi shield cannot be opened until the pulseaudio suspend-on-idle timeout expires. This causes the application to exit with an error message reporting that the HiFi shield is busy.
- To test, connect an amplifier to the 3.5mm or RCA lineout jack on the HiFi Shield, reboot the C1+, and then run:
This instruction was made by culler (our forum member).