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WirePlumber/Pipewire does not "see" my HDMI sound output, whereas ALSA does.

Quite simply, WirePlumber does not recognize/list/see the HDMI outputs on my system whereas ALSA does. This makes routing sound to the HDMI display speakers impossible.

Software versions:

wireplumber: Compiled with libwireplumber 0.4.13 Linked with libwireplumber 0.4.13

pipewire Compiled with libpipewire 0.3.67 Linked with libpipewire 0.3.67

Here is the aplay -l, wpctl status, inxi -Fxz and systemctl status outputs that show the issue and the system config. There are no errors reported in dmesg:

aplay -l:

**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3266 Analog [ALC3266 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [U28E590]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: D6000 [Dell Universal Dock D6000], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

wpctl status:

PipeWire 'pipewire-0' [0.3.67, jbartle9@jbartle9-Precision-5530, cookie:236466239]
 └─ Clients:
        32. xdg-desktop-portal                  [0.3.67, jbartle9@jbartle9-Precision-5530, pid:5078]
        33. pipewire                            [0.3.67, jbartle9@jbartle9-Precision-5530, pid:13668]
        34. Google Chrome input                 [0.3.67, jbartle9@jbartle9-Precision-5530, pid:99355]
        36. WirePlumber                         [0.3.67, jbartle9@jbartle9-Precision-5530, pid:13667]
        37. WirePlumber [export]                [0.3.67, jbartle9@jbartle9-Precision-5530, pid:13667]
        64. GNOME Shell Volume Control          [0.3.67, jbartle9@jbartle9-Precision-5530, pid:13757]
        65. GNOME Volume Control Media Keys     [0.3.67, jbartle9@jbartle9-Precision-5530, pid:4810]
        66. wpctl                               [0.3.67, jbartle9@jbartle9-Precision-5530, pid:100570]

Audio
 ├─ Devices:
 │      45. Dell Universal Dock D6000           [alsa]
 │      46. Built-in Audio                      [alsa]
 │  
 ├─ Sinks:
 │      53. Dell Universal Dock D6000 Digital Stereo (IEC958) [vol: 1.00]
 │  *   55. Built-in Audio Analog Stereo        [vol: 0.98]
 │  
 ├─ Sink endpoints:
 │  
 ├─ Sources:
 │      54. Dell Universal Dock D6000 Digital Stereo (IEC958) [vol: 1.00]
 │  *   56. Built-in Audio Analog Stereo        [vol: 0.82]
 │  
 ├─ Source endpoints:
 │  
 └─ Streams:

Video
 ├─ Devices:
 │      43. Integrated_Webcam_HD                [v4l2]
 │      44. Integrated_Webcam_HD                [v4l2]
 │  
 ├─ Sinks:
 │  
 ├─ Sink endpoints:
 │  
 ├─ Sources:
 │  *   47. Integrated_Webcam_HD (V4L2)        
 │  
 ├─ Source endpoints:
 │  
 └─ Streams:

Settings
 └─ Default Configured Node Names:
         0. Audio/Sink    alsa_output.pci-0000_00_1f.3.playback.8.0
         1. Audio/Source  alsa_input.pci-0000_00_1f.3.capture.0.0

inxi -Fxz:

System:
  Kernel: 6.2.6-76060206-generic x86_64 bits: 64 compiler: N/A
    Desktop: GNOME 42.5 Distro: Pop!_OS 22.04 LTS base: Ubuntu 22.04 LTS Jammy
Machine:
  Type: Laptop System: Dell product: Precision 5530 v: N/A
    serial: <superuser required>
  Mobo: Dell model: 0CC5K6 v: A00 serial: <superuser required> UEFI: Dell
    v: 1.30.0 date: 12/15/2022
Battery:
  ID-1: BAT0 charge: 78.5 Wh (100.0%) condition: 78.5/97.0 Wh (80.9%)
    volts: 12.6 min: 11.4 model: SMP DELL GPM0365 status: Full
  Device-1: hidpp_battery_0 model: Logitech Wireless Keyboard
    charge: 55% (should be ignored) status: Discharging
  Device-2: hidpp_battery_1 model: Logitech Wireless Mouse
    charge: 55% (should be ignored) status: Discharging
  Device-3: wacom_battery_0 model: Wacom HID 488E charge: 0% status: N/A
CPU:
  Info: 6-core model: Intel Xeon E-2176M bits: 64 type: MT MCP
    arch: Coffee Lake rev: A cache: L1: 384 KiB L2: 1.5 MiB L3: 12 MiB
  Speed (MHz): avg: 2066 high: 2700 min/max: 800/4400 cores: 1: 800 2: 800
    3: 2700 4: 2700 5: 2700 6: 800 7: 800 8: 2700 9: 2700 10: 2700 11: 2700
    12: 2700 bogomips: 64797
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
  Device-1: Intel vendor: Dell driver: i915 v: kernel bus-ID: 00:02.0
  Device-2: NVIDIA GP107GLM [Quadro P2000 Mobile] vendor: Dell
    driver: nvidia v: 525.89.02 bus-ID: 01:00.0
  Device-3: Microdia Integrated_Webcam_HD type: USB driver: uvcvideo
    bus-ID: 1-12:5
  Display: x11 server: X.Org v: 1.21.1.3 driver: X:
    loaded: modesetting,nvidia unloaded: fbdev,nouveau,vesa gpu: i915
    resolution: 1: 1920x1080~60Hz 2: 2560x1440~60Hz 3: 2048x1152~60Hz
  OpenGL: renderer: Mesa Intel UHD Graphics P630 (CFL GT2)
    v: 4.6 Mesa 22.3.5 direct render: Yes
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Dell driver: snd_hda_intel
    v: kernel bus-ID: 00:1f.3
  Device-2: DisplayLink Dell Universal Dock D6000 type: USB
    driver: cdc_ncm,snd-usb-audio bus-ID: 3-1.1:3
  Sound Server-1: ALSA v: k6.2.6-76060206-generic running: yes
  Sound Server-2: JACK v: 1.9.20 running: no
  Sound Server-3: PulseAudio v: 15.99.1 running: no
  Sound Server-4: PipeWire v: 0.3.67 running: yes
Network:
  Device-1: Intel Wireless-AC 9260 driver: iwlwifi v: kernel bus-ID: 3b:00.0
  IF: wlp59s0 state: down mac: <filter>
  IF-ID-1: docker0 state: down mac: <filter>
  IF-ID-2: enx9cebe88ddb74 state: up speed: 1000 Mbps duplex: half
    mac: <filter>
Bluetooth:
  Device-1: Intel Wireless-AC 9260 Bluetooth Adapter type: USB driver: btusb
    v: 0.8 bus-ID: 1-4:3
  Report: hciconfig ID: hci0 rfk-id: 2 state: up address: <filter>
    bt-v: 3.0 lmp-v: 5.1
RAID:
  Hardware-1: Intel 82801 Mobile SATA Controller [RAID mode] driver: ahci
    v: 3.0 bus-ID: 00:17.0
Drives:
  Local Storage: total: 931.51 GiB used: 300.18 GiB (32.2%)
  ID-1: /dev/sda vendor: Crucial model: CT1000MX500SSD4 size: 931.51 GiB
Partition:
  ID-1: / size: 904.49 GiB used: 295.47 GiB (32.7%) fs: ext4 dev: /dev/dm-1
    mapped: data-root
  ID-2: /boot/efi size: 1008 MiB used: 571.5 MiB (56.7%) fs: vfat
    dev: /dev/sda1
Swap:
  ID-1: swap-1 type: partition size: 4 GiB used: 0 KiB (0.0%) dev: /dev/dm-2
    mapped: cryptswap
  ID-2: swap-2 type: zram size: 16 GiB used: 0 KiB (0.0%) dev: /dev/zram0
Sensors:
  System Temperatures: cpu: 43.0 C pch: 57.0 C mobo: 39.0 C
  Fan Speeds (RPM): cpu: 2504 fan-2: 2493
Info:
  Processes: 404 Uptime: 15h 21m Memory: 31 GiB used: 7.84 GiB (25.3%)
  Init: systemd runlevel: 5 Compilers: gcc: 11.3.0 Packages: 3122 Shell: Bash
  v: 5.1.16 inxi: 3.3.13

systemctl status --user pipewire wireplumber:

● pipewire.service - PipeWire Multimedia Service
     Loaded: loaded (/usr/lib/systemd/user/pipewire.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2023-04-12 18:45:41 CEST; 15h ago
TriggeredBy: ● pipewire.socket
   Main PID: 13663 (pipewire)
      Tasks: 3 (limit: 37933)
     Memory: 6.5M
        CPU: 2.655s
     CGroup: /user.slice/user-1000.slice/user@1000.service/session.slice/pipewire.service
             └─13663 /usr/bin/pipewire

Apr 12 18:45:41 jbartle9-Precision-5530 systemd[4309]: Stopped PipeWire Multimedia Service.
Apr 12 18:45:41 jbartle9-Precision-5530 systemd[4309]: Started PipeWire Multimedia Service.

● wireplumber.service - Multimedia Service Session Manager
     Loaded: loaded (/usr/lib/systemd/user/wireplumber.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2023-04-12 18:45:41 CEST; 15h ago
   Main PID: 13667 (wireplumber)
      Tasks: 4 (limit: 37933)
     Memory: 5.8M
        CPU: 1.042s
     CGroup: /user.slice/user-1000.slice/user@1000.service/session.slice/wireplumber.service
             └─13667 /usr/bin/wireplumber

Apr 12 18:45:41 jbartle9-Precision-5530 systemd[4309]: Started Multimedia Service Session Manager.
Apr 12 18:45:41 jbartle9-Precision-5530 wireplumber[13667]: SPA handle 'api.libcamera.enum.manager' could not be loaded; is it installed?
Apr 12 18:45:41 jbartle9-Precision-5530 wireplumber[13667]: PipeWire's libcamera SPA missing or broken. libcamera not supported.
Apr 12 18:45:42 jbartle9-Precision-5530 wireplumber[13667]: <WpPortalPermissionStorePlugin:0x555d54cded90> Failed to call Lookup: GDBus.Error:org.freedesktop.portal.Error.N>
Apr 12 18:45:42 jbartle9-Precision-5530 wireplumber[13667]: <WpPortalPermissionStorePlugin:0x555d54cded90> Failed to call Lookup: GDBus.Error:org.freedesktop.portal.Error.N>
Apr 12 18:45:42 jbartle9-Precision-5530 wireplumber[13667]: <WpSiAudioAdapter:0x555d54ecd070> Object activation aborted: proxy destroyed
Apr 12 18:45:42 jbartle9-Precision-5530 wireplumber[13667]: <WpSiAudioAdapter:0x555d54ecd070> failed to activate item: Object activation aborted: proxy destroyed