**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: <code>setenv enabledac "enabledac"</code>
  - 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: \\ <code>set-default-sink alsa_output.platform-odroid_sound_card.5.analog-stereo</code>
  - 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** : \\ <code> suspend-sink alsa_output.platform-odroid_sound_card.5.analog-stereo 1 </code> 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:\\ <code>aplay /usr/share/sounds/alsa/Front_Center.wav</code>


**Credit:**\\
This instruction was made by culler (our forum member). \\
[[http://forum.odroid.com/viewtopic.php?f=112&t=16218|Original Post]] \\
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**Update**
If your kernel version is 3.10.96-143 or higher, the I2S/DAC drivers have been changed to modules. \\
So you need to load the modules before enable the HiFi-Shield.\\
Refer this [[en:c2_hifi_shield|LINK]]
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