The PulseAudio sound server has been rewritten to use timer-based audio scheduling instead of the traditional interrupt-driven approach. Timer-based scheduling may expose issues in some Alsa drivers. To turn timer-based scheduling off, replace the line
Jaunty has a new version of PulseAudio. The below is taken from "https:/ /fedoraproject. org/wiki/ Features/ GlitchFreeAudio", perhaps you can report back if this helped you or not.
The PulseAudio sound server has been rewritten to use timer-based audio scheduling instead of the traditional interrupt-driven approach. Timer-based scheduling may expose issues in some Alsa drivers. To turn timer-based scheduling off, replace the line
load-module module-hal-detect
in /etc/pulse/ default. pa by
load-module module-hal-detect tsched=0