@Phuah, please try to upgrade your sound drivers according to https://wiki.ubuntu.com/DebuggingSoundProblems/KarmicCaveats#Sound%20drivers%20needs%20to%20be%20updated and see if that helps.
@Phuah, please try to upgrade your sound drivers according to https:/ /wiki.ubuntu. com/DebuggingSo undProblems/ KarmicCaveats# Sound%20drivers %20needs% 20to%20be% 20updated and see if that helps.