pulse audio, alsa

alsamixer F2

Outils driver Alsa http://www.alsa-project.org/main/index.php/XRUN_Debug
debug avec:  echo 11 > /proc/asound/card0/pcm0p/xrun_debug
debug off :  echo 0 >           "

http://www.alsa-project.org/main/index.php/Asoundrc
http://www.freedesktop.org/wiki/Software/PulseAudio/

https://bbs.archlinux.org/viewtopic.php?id=164605  https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting