Linux: ALSA and PulseAudio

When several softwares compete for audio hw resources, it’s time to check the PulseAudio and ALSA setup.

The reason for such instability is mostly caused by incorrect setup of ALSA, which reserves the hw resources (sound card) for itself. Asuming the pulseaudio and alsa USE flags are set up in /etc/make.conf, you have emerged alsa-plugins.

emerge -av alsa-plugins

The following setup of /etc/asound.conf file should make the sound work properly. Otherwise, ALSA won’t be able to talk with PulseAudio and will seize the sound devices instead.

pcm.pulse {
     type pulse
}

ctl.pulse {
     type pulse
}

pcm.!default {
     type pulse
}

ctl.!default {
     type pulse
}

Source.

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