Sound over HDMI - strange behavior

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Hi all,

Recently I relaunched my quite old computer and connected it to TV (it's quite old so I didn't have monitor).

The computer is connected to TV via HDMI using built-in GPU, and I experience following sound problems:
- by default there's no sound over HDMI
- pavcontrol shows two devices
   1. RS880 HDMI Radeon HD4200 Digital Stereo (unavailable) (unplugged)
   2. Built-in with various types (all unplugged)
- in order to hear sound, I have to open pavcontrol, turn off Built-in, and select RS880 (even it's unplugged!)

I wonder why this connection is shown as unavailable, unplugged, even if I get picture, and sound (however I have to reconfigure sound after every reboot).

Below some logs, which may help

sudo dmesg|grep -i hdmi
[    0.275650] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    3.908867] input: HDA ATI HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:05.1/sound/card1/input9
[    4.408419] [drm]   HDMI-A-1
[    4.501475] snd_hda_codec_hdmi hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[    4.827597] snd_hda_codec_hdmi hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[    5.146638] snd_hda_codec_hdmi hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[    5.463625] snd_hda_codec_hdmi hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[    5.783663] snd_hda_codec_hdmi hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD (a lot of this)

pacmd list-cards
2 card(s) available.
    index: 0
        name: <alsa_card.pci-0000_01_05.1>
        driver: <module-alsa-card.c>
        owner module: 23
        properties:
                alsa.card = "1"
                alsa.card_name = "HDA ATI HDMI"
                alsa.long_card_name = "HDA ATI HDMI at 0xfe6e8000 irq 19"
                alsa.driver_name = "snd_hda_intel"
                device.bus_path = "pci-0000:01:05.1"
                sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:05.1/sound/card1"
                device.bus = "pci"
                device.vendor.id = "1002"
                device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
                device.product.id = "970f"
                device.product.name = "RS880 HDMI Audio [Radeon HD 4200 Series]"
                device.string = "1"
                device.description = "RS880 HDMI Audio [Radeon HD 4200 Series]"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-pci"
        profiles:
                output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5900, available: no)
                output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 800, available: no)
                output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 800, available: no)
                off: Off (priority 0, available: unknown)
        active profile: <output:hdmi-stereo>
        sinks:
                alsa_output.pci-0000_01_05.1.hdmi-stereo/#1: RS880 HDMI Audio [Radeon HD 4200 Series] Digital Stereo (HDMI)
        sources:
                alsa_output.pci-0000_01_05.1.hdmi-stereo.monitor/#1: Monitor of RS880 HDMI Audio [Radeon HD 4200 Series] Digital Stereo (HDMI)
        ports:
                hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "video-display"
    index: 1
        name: <alsa_card.pci-0000_00_14.2>
        driver: <module-alsa-card.c>
        owner module: 24
        properties:
                alsa.card = "0"
                alsa.card_name = "HDA ATI SB"
                alsa.long_card_name = "HDA ATI SB at 0xfe4f4000 irq 16"
                alsa.driver_name = "snd_hda_intel"
                device.bus_path = "pci-0000:00:14.2"
                sysfs.path = "/devices/pci0000:00/0000:00:14.2/sound/card0"
                device.bus = "pci"
                device.vendor.id = "1002"
                device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
                device.product.id = "4383"
                device.product.name = "SBx00 Azalia (Intel HDA) (M4A89GTD PRO/USB3 Motherboard)"
                device.form_factor = "internal"
                device.string = "0"
                device.description = "Built-in Audio"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-pci"
        profiles:
                input:analog-stereo: Analog Stereo Input (priority 65, available: no)
                output:analog-stereo: Analog Stereo Output (priority 6500, available: no)
                output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6565, available: no)
                output:analog-surround-21: Analog Surround 2.1 Output (priority 1300, available: no)
                output:analog-surround-21+input:analog-stereo: Analog Surround 2.1 Output + Analog Stereo Input (priority 1365, available: no)
                output:analog-surround-40: Analog Surround 4.0 Output (priority 1200, available: no)
                output:analog-surround-40+input:analog-stereo: Analog Surround 4.0 Output + Analog Stereo Input (priority 1265, available: no)
                output:analog-surround-41: Analog Surround 4.1 Output (priority 1300, available: no)
                output:analog-surround-41+input:analog-stereo: Analog Surround 4.1 Output + Analog Stereo Input (priority 1365, available: no)
                output:analog-surround-50: Analog Surround 5.0 Output (priority 1200, available: no)
                output:analog-surround-50+input:analog-stereo: Analog Surround 5.0 Output + Analog Stereo Input (priority 1265, available: no)
                output:analog-surround-51: Analog Surround 5.1 Output (priority 1300, available: no)
                output:analog-surround-51+input:analog-stereo: Analog Surround 5.1 Output + Analog Stereo Input (priority 1365, available: no)
                output:analog-surround-71: Analog Surround 7.1 Output (priority 1200, available: no)
                output:analog-surround-71+input:analog-stereo: Analog Surround 7.1 Output + Analog Stereo Input (priority 1265, available: no)
                output:iec958-stereo: Digital Stereo (IEC958) Output (priority 5500, available: unknown)
                output:iec958-stereo+input:analog-stereo: Digital Stereo (IEC958) Output + Analog Stereo Input (priority 5565, available: no)
                off: Off (priority 0, available: unknown)
        active profile: <off>
        ports:
                analog-input-front-mic: Front Microphone (priority 8500, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "audio-input-microphone"
                analog-input-rear-mic: Rear Microphone (priority 8200, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "audio-input-microphone"
                analog-input-linein: Line In (priority 8100, latency offset 0 usec, available: no)
                        properties:
                               
                analog-output-lineout: Line Out (priority 9000, latency offset 0 usec, available: no)
                        properties:
                               
                analog-output-headphones: Headphones (priority 9900, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "audio-headphones"
                iec958-stereo-output: Digital Output (S/PDIF) (priority 0, latency offset 0 usec, available: unknown)
                        properties:

Kind regards,
Radek
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