I know this is an old bug but I have the same issue with a new ASRock Z97 Extreme 6 with an i7 4790S. I've reviewed the linked bugzilla report from post #8 and the *fix* to use 'intel_iommu=on,igfx_off' does indeed allow audio to resume but breaks IOMMU as in I can no long pass through my Nvidia GTX 650 card to a KVM guest. As the bugzilla bug is marked WONTFIX due to a firmware issue I wondered where this now stands with the same problem spanning 2 different vendors i.e. ASUS in the original 2013 and my ASRock today?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1223840 Title: 8086:0412 Intel HDMI Audio not working with IOMMU enabled To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1223840/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs