Search notes:

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
See also turrning of the annoying beep

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*

See also

/proc/asound
~/.asoundrc
ALSA
OSS
JACK
PulseAudio
/dev/snd
/mnt/wslg/PulseServer

Links

The Linux Audio Mess

Index

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