I’ve posted twice recently about my problems following an upgrade of Ubuntu Netbook Remix to Lucid Lynx (10.04). In short, I upgraded both the BIOS of the netbook (an Asus Eee PC 1008HA) and upgraded Ubuntu from 9.10 (Karmic Koala) to 10.04 (Lucid Lynx). Once I did this the sound would disappear after the first time I logged in following each boot, and only work properly if I logged out and in again.
One kind commenter (thank you “ThrasherC”) suggested
Fantastic hint, two days googling around and found solution here
Thx