Copying over the comment from the previous bug#:
As tested with the 12.02 RC2 images, audio works from command line:
aplay -Dhw:0,1 /usr/share/sounds/alsa/Side_Left.wav
but is heavily distorted in pulseaudio. For example try speaker tests in gnome sound settings.
Switching pulseaudio from timer based scheduling to interrupt based fixed the choppiness for me:
17:35 < suihkulokki> in /etc/pulse/default.pa: 17:35 < suihkulokki> -load-module module-udev-detect 17:35 < suihkulokki> +load-module module-udev-detect tsched=0
it is apparently considered a bug in the alsa driver if pulseaudio cannot use timer scheduling, and we probably shouldn't change the default for all boards.
Explanation of timer based scheduling in pulseaudio at:
http://0pointer.de/blog/projects/pulse-glitch-free.html
Copying over the comment from the previous bug#:
As tested with the 12.02 RC2 images, audio works from command line:
aplay -Dhw:0,1 /usr/share/ sounds/ alsa/Side_ Left.wav
but is heavily distorted in pulseaudio. For example try speaker tests in gnome sound settings.
Switching pulseaudio from timer based scheduling to interrupt based fixed the choppiness for me:
17:35 < suihkulokki> in /etc/pulse/ default. pa:
17:35 < suihkulokki> -load-module module-udev-detect
17:35 < suihkulokki> +load-module module-udev-detect tsched=0
it is apparently considered a bug in the alsa driver if pulseaudio cannot use timer scheduling, and we probably shouldn't change the default for all boards.
Explanation of timer based scheduling in pulseaudio at:
http:// 0pointer. de/blog/ projects/ pulse-glitch- free.html