I can confirm this bug on a System76 Kudu Professional (i7-4900MQ). Booting with 3.19.0-18-generic, I don't get any HDMI option in the Output tab in the sound settings UI.
Booting with 3.19.0-16-generic, I get an HDMI option and it works fine. So this is definitely a regression between 3.19.0-16-generic and 3.19.0-18-generic. ** Also affects: system76 Importance: Undecided Status: New ** Changed in: system76 Importance: Undecided => High ** Changed in: system76 Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1457369 Title: kernel 3.19.0-18 breaks HDMI audio for snd_hda_intel To manage notifications about this bug go to: https://bugs.launchpad.net/system76/+bug/1457369/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs