Dear Maintainer,

After the update from Debian 12 to 13 sound comes only from the front speakers
regardless of profile and balance configuration. In another words, when I select
any of the Analog Surround Output profiles, the system behaves as if the Analog
Stereo Output was enabled.
pavucontrol was used for the profile selection and volume adjustment.

I can configure the channels volume via `alsamixer` and hear sound from all the
channels using the command `speaker-test -Dsurround51 -c 6`.

I attach the log from the `pipewire-pulse` daemon with the following actions: change the profile, adjust the balance and play some music.

Additionally, when changing card configuration profiles in pavucontrol,
pipewire systemd service logs errors:

pipewire[11297]: pw.core: 0x56451f8f24b0: error -22 for resource 45:
port_set_param(Spa:Enum:ParamId:Format) failed: Invalid argument
pipewire[11297]: mod.client-node: 0x56451fb219e0: error seq:1436 -22
(port_set_param(Spa:Enum:ParamId:Format) failed: Invalid argument)

Turns out, the problem was with pipewire upmixing not being enabled by
default. After copying /usr/share/pipewire/pipewire-
pulse.conf.avail/20-upmix.conf to
~/.config/pipewire/{client.conf.d,pipewire.conf.d,pipewire-
pulse.conf.d}/20-upmix.conf (not sure which one kicked in) all the
channels in the 5.1 configuration started working.