Description of problem:
When output device is set to HDMI / DisplayPort - Built-in audio
to direct sound to the tv,
sound disappears completely.

As a workaround, hdmi output can be set first,
and the sound producing program started afterwards.
Then sound works.

The problem only happens when the only output devices are
internal speakers and a displayport tv or monitor
(or hdmi, connected through an adapter)

The other output peripheral I have, usb headphones,
do not suffer from this problem.

The problem also does not happen if I have both the tv
and the headphones connected at the same time.

This is a regression in 0.4.4.
0.4.3 works as expected.

Version-Release number of selected component (if applicable):
0.4.4-2

How reproducible:
Always on my machine,
but there is some still unknown factor at play also,
because upstream has difficulties reproducing this.

Steps to Reproduce:
1. Open Gnome Settings, Sound tab
2. Ensure that Output Device is set to Speakers - Built-in Audio
3. Connect hdmi or displayport output device
4. Observe that sound output HDMI / DisplayPort - Built-in audio appears, do not select it yet
5. Start a program that produces sound, for example Gnome Videos
6. Observe that the program appears in Volume Levels list
7 .Switch sound output to HDMI / DisplayPort

Actual results:
Sound disappears.
The audio source program disappears from the list.

Expected results:
Sound output is switched to the hdmi / displayport device.

Additional info:
More information available at the upstream ticket:
https://gitlab.freedesktop.org/pipewire/wireplumber/-/issues/80