XO/Audio

Audio Testing on the XO

This page contains the results of testing audio on the XO.

Audio under OLPC's latest build

• The OLPC build doesn't include pulseaudio, but they are using ALSA under 2.5.25.
• They use the following udev rules:
• /etc/udev/rules.d/40-alsa.rules

# do not edit this file, it will be overwritten on update

KERNEL=="controlC[0-9]*",	NAME="snd/%k"
KERNEL=="hwC[D0-9]*",		NAME="snd/%k"
KERNEL=="pcmC[D0-9cp]*",	NAME="snd/%k"
KERNEL=="midiC[D0-9]*",		NAME="snd/%k"
KERNEL=="timer",		NAME="snd/%k"
KERNEL=="seq",			NAME="snd/%k"
KERNEL=="mixer0",		SYMLINK+="mixer"
KERNEL=="dsp0",			SYMLINK+="dsp"
KERNEL=="audio0",		SYMLINK+="audio"

• /etc/udev/rules.d/90-alsa.rules

SUBSYSTEM=="sound", KERNEL=="controlC*", RUN+="/sbin/salsa"
SUBSYSTEM=="sound", KERNEL=="pcm*", RUN+="/sbin/salsa"