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Linux sound

Enabling sound on Arch Linux

sudo pacman -S alsa-utils
sudo amixer sset Master unmute

Getting rid of the annoying beep

sudo rmmod pcspkr

The command above only gets rid of the beep until the next restart. A permanent solution seems to be to add a file named nobeep.conf in the directory /etc/modprobe.d with the content

blacklist pcspkr

Testing

speaker-test (installed by ALSA?) emits some pink noise to check if something is audible at all.

TODO

$ alsamixer

pamixer can control the volue of sinks (thus, it is like amixer, but for pulseaudio).

HDA

HDA (High Definition Audio Interface, also IHD or Azalia) is a specification for audio/sound-chips.

In Linux, a HDA capable chip is managed by the kernel module snd_hda_intel (snd-hda-intel?)

HDA obsoletes the AC97 specification.

Find codec of sound chip

grep Codec /proc/asound/card0/codec*

Links

The Linux Audio Mess

Index