Denes, please open a support ticket[0] instead of following up here. Thanks.
[0] https://answers.launchpad.net/ubuntu/+addticket -- Inaudible sound on Lenovo 3000 N100-07684JU https://launchpad.net/bugs/39517 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
