Linux Sound

ALSA

  • alsaconf - reconfigures sound card and loads appropriate modules

  • alsamixer - Set volumes and unmute sound

  • alsactl store

Most of the time running alsaconf unloads and reloads the modules in a working order, but needs doing after each reboot for me.

Note: For some reason alsaconf is not distributed with the alsa-tools package in Ubuntu's 7.10 Gutsy Gibbon

Replacing config files (Debian 4.0 Etch)

Backup your system first

  • apt-get remove --purge alsa-utils modutils alsa-base discover

  • apt-get install alsa-utils modutils alsa-base discover

  • update-modules

Others to try re-installing after purge

  • linux-sound-base
  • oss-compat
  • alsa-oss

In the end I identified snd_intel8x0m was listed by lsmod when things were not working, but not listed when they were! I edited /etc/modprobe.d/alsa-base and uncommented the line. Problem solved!

AMR File Format

$ mplayer -ao pcm:fast:file=recording.wav recording.amr
$ lame recording.wav recording.mp3
$ oggenc -o recording.ogg recording.wav

See:

Dell Inspiron 1525 Ubuntu 7.10 Gutsy Gibbon - No Sound

Fixed by:

# cat >>/etc/modprobe.d/alsa-base <<EOF
# Ubuntu Bug # 131133
options snd-hda-intel model=3stack
EOF

See https://wiki.ubuntu.com/Gutsy_Intel_HD_Audio_Controller

Resources

Related Topics: SkypeSound

-- Frank Dean - 24 Apr 2007