I have Ubuntu 9.10. Headphones appear to work fine. External speakers - nothing. There are so many sound preferences I have no idea what or which combination.
Went to terminal and ran
alsamixer which seems to recognize my sound card, though the driver is not listed in System > Administration > Hardware Drivers; the only driver listed is my graphics card.
I have tried several forums and it seems no one is interested in responding to sound issues.
Here's hoping it is different here.