Please check this: https://wiki.ubuntu.com/DebuggingSoundProblems/KarmicCaveats#Volume%20range%20anomalies (that section applies to Lucid as well) and report back whether it worked or not.
Please check this: https:/ /wiki.ubuntu. com/DebuggingSo undProblems/ KarmicCaveats# Volume% 20range% 20anomalies (that section applies to Lucid as well) and report back whether it worked or not.