Please try if this package fixes the sound problem.
https://edge.launchpad.net/%7Ejouston-huang/+archive/+files/nb100-sound_1.06_lpia.deb
Please try if this package fixes the sound problem.
https:/ /edge.launchpad .net/%7Ejouston -huang/ +archive/ +files/ nb100-sound_ 1.06_lpia. deb