Comment 5 for bug 1310298

Theo B, it is strongly advised to test out the latest LTS via http://releases.ubuntu.com/trusty/ to see if your sound problem is resolved. If it is not, the Ubuntu Audio Developer team, Ubuntu Kernel team, Ubuntu Bug Control team, and Ubuntu Bug Squad all would like you to please file a new report by executing the following in a terminal:
ubuntu-bug sound

For more on this, please see the Ubuntu Audio Developer team article:
https://wiki.ubuntu.com/DebuggingSoundProblems

the Ubuntu Kernel team article:
https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports

the Ubuntu Bug Control team and Ubuntu Bug Squad team article:
https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue

and Ubuntu Community article:
https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette

When opening up the new report, please feel free to subscribe me to it.

Please note, not filing a new report would delay your problem being addressed as quickly as possible.

Thank you for your understanding.