Wrong audio output selected by default on Pi 4

[Dave Jones]

When testing the Ubuntu 22.10 (kinetic) Desktop for Raspberry Pi on a Raspberry Pi 4, the new pipewire stack selects the "Analogue Output - Built-in Audio" by default when the system is first installed, when the HDMI output probably ought to be selected by default (the analogue output is notably lower quality due to the low resolution DAC used, and tends to only be used when there is no alternative, e.g. on DPI/DSI displays with no audio channel).

This is a low priority since the default is easily changed in the gnome control center, and the new selection persists across boots (in contrast to the same issue in the older pulseaudio stack; LP: #1877194). However, it is a minor annoyance that a non-technical user may struggle to figure out initially (it also means the first-time setup sound isn't audible on first boot).

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
https://iso.qa.ubuntu.com/qatracker/reports/bugs/1993347

[Sebastien Bacher (seb128)]

Thanks Dave, since we currently don't have an audio stack maintainer could you perhaps also report it upstream on https://gitlab.freedesktop.org/pipewire/pipewire ? it would increase the chances to have to reviewed

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Dave Jones (waveform)]

No longer occurs on the Mantic final images; HDMI is selected by default, with analog output still available as a secondary option. Marking fix released.

[Dave Jones (waveform)]

Occurred on the jammy .4 images during ISO testing

[Dave Jones (waveform)]

And is occurring on the noble images again...