Atenção usuários de email com anti-spam (Uol e Bol).
00:14.2 Audio device: ATI Technologies Inc IXP SB4x0 High Definition Audio Controller (rev 01)
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/459499
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/583983