Thanks for the suggestion, I can have audio output from HDMI with the following now by playing an audio clip instead of noise:
$ sudo amixer scontrols $ sudo amixer set Master 100 unmute $ sudo amixer set IEC958 100 unmute $ sudo aplay -D plughw:0,7 /var/snap/alsa-utils/common/file_example_WAV_2MG.wav -v ** Changed in: snapd Status: Incomplete => Invalid ** Changed in: linux (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879630 Title: No sound output from HDMI audio To manage notifications about this bug go to: https://bugs.launchpad.net/snapd/+bug/1879630/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs