Per the latest v3.8-rc2-raring kernel - "linux- image-3.8.0-030800rc2-generic_3.8.0-030800rc2.201301022235_amd64" - the sound settings are still lacking the HDMI audio settings, also as primary audio it's listed now as "Dummy Ouput" - No sound is produced.
** Changed in: linux (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1096177 Title: [Lenovo b575e] - No HDMI Sound Control in Sound Settings To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1096177/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs