Verified answer

Search the internet for Ubuntu sound drivers + your graphics card model. Hopefully they've been made for you, good luck! :)

Register for free and post your questions at this forum [website in "Know your source? List it here:" section below]: After going to the site, go to Forums, scroll down to Linux-Distributions. Under where it says Sub-forums, click on Ubuntu, then click on Search. type in some keywords like audio or speakers to see if anyone already has your problem posted on the site. If not, make a new thread and post your questions.

The ubuntu forums is a much better community to search for this.