By disable both monitors:
Sink #48
State: SUSPENDED
Name: alsa_output.pci-0000_00_1b.0.iec958-stereo
Description: Built-in Audio Digital Stereo (IEC958)
Driver: PipeWire
Sample Specification: s32le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 4294967295
Mute: no
Volume: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
balance 0,00
Base Volume: 65536 / 100% / 0,00 dB
Monitor Source: alsa_output.pci-0000_00_1b.0.iec958-stereo.monitor
Latency: 0 usec, configured 0 usec
Flags: HARDWARE HW_MUTE_CTRL DECIBEL_VOLUME LATENCY SET_FORMATS
Properties:
object.path = “alsa:pcm:0:iec958:0:playback”
api.alsa.path = “iec958:0”
api.alsa.pcm.card = “0”
api.alsa.pcm.stream = “playback”
audio.channels = “2”
audio.position = “FL,FR”
device.routes = “1”
alsa.resolution_bits = “16”
device.api = “alsa”
device.class = “sound”
alsa.class = “generic”
alsa.subclass = “generic-mix”
alsa.name = “ALC892 Digital”
alsa.id = “ALC892 Digital”
alsa.subdevice = “0”
alsa.subdevice_name = “subdevice #0”
alsa.device = “1”
alsa.card = “0”
alsa.card_name = “HDA Intel PCH”
alsa.long_card_name = “HDA Intel PCH at 0xf0410000 irq 33”
alsa.driver_name = “snd_hda_intel”
device.profile.name = “iec958-stereo”
device.profile.description = “Digital Stereo (IEC958)”
card.profile.device = “14”
device.id = “45”
factory.name = “api.alsa.pcm.sink”
priority.driver = “736”
priority.session = “736”
media.class = “Audio/Sink”
node.nick = “HDA Intel PCH”
node.name = “alsa_output.pci-0000_00_1b.0.iec958-stereo”
device.description = “Built-in Audio”
device.icon_name = “audio-card-iec958”
device.bus = “pci”
device.bus_path = “pci-0000:00:1b.0”
device.form_factor = “internal”
node.pause-on-idle = “false”
factory.id = “18”
clock.quantum-limit = “8192”
client.id = “33”
node.driver = “true”
factory.mode = “merge”
audio.adapt.follower = “”
library.name = “audioconvert/libspa-audioconvert”
object.id = “35”
object.serial = “48”
device.enum.api = “udev”
api.alsa.card = “0”
api.alsa.card.name = “HDA Intel PCH”
api.alsa.card.longname = “HDA Intel PCH at 0xf0410000 irq 33”
device.plugged.usec = “4778821”
sysfs.path = “/devices/pci0000:00/0000:00:1b.0/sound/card0”
device.subsystem = “sound”
device.vendor.id = “0x8086”
device.vendor.name = “Intel Corporation”
device.product.id = “0x8c20”
device.product.name = “8 Series/C220 Series Chipset High Definition Audio Controller”
device.name = “alsa_card.pci-0000_00_1b.0”
device.nick = “HDA Intel PCH”
api.alsa.use-acp = “true”
api.acp.auto-profile = “false”
api.acp.auto-port = “false”
api.dbus.ReserveDevice1 = “Audio0”
device.string = “0”
Ports:
iec958-stereo-output: Digital Output (S/PDIF) (type: SPDIF, priority: 0, availability unknown)
Active Port: iec958-stereo-output
Formats:
pcm
Sink #319
State: SUSPENDED
Name: alsa_output.pci-0000_01_00.1.hdmi-stereo
Description: Tonga HDMI Audio [Radeon R9 285/380] (Radeon R9 285/380 HDMI Audio) Digital Stereo (HDMI)
Driver: PipeWire
Sample Specification: s16le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 4294967295
Mute: no
Volume: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
balance 0,00
Base Volume: 65536 / 100% / 0,00 dB
Monitor Source: alsa_output.pci-0000_01_00.1.hdmi-stereo.monitor
Latency: 0 usec, configured 0 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY SET_FORMATS
Properties:
object.path = “alsa:pcm:1:hdmi:1:playback”
api.alsa.path = “hdmi:1”
api.alsa.pcm.card = “1”
api.alsa.pcm.stream = “playback”
audio.channels = “2”
audio.position = “FL,FR”
device.routes = “1”
alsa.resolution_bits = “16”
device.api = “alsa”
device.class = “sound”
alsa.class = “generic”
alsa.subclass = “generic-mix”
alsa.name = “HDMI 0”
alsa.id = “HDMI 0”
alsa.subdevice = “0”
alsa.subdevice_name = “subdevice #0”
alsa.device = “3”
alsa.card = “1”
alsa.card_name = “HDA ATI HDMI”
alsa.long_card_name = “HDA ATI HDMI at 0xf0260000 irq 34”
alsa.driver_name = “snd_hda_intel”
device.profile.name = “hdmi-stereo”
device.profile.description = “Digital Stereo (HDMI)”
card.profile.device = “6”
device.id = “42”
factory.name = “api.alsa.pcm.sink”
priority.driver = “632”
priority.session = “632”
media.class = “Audio/Sink”
node.nick = “HDA ATI HDMI”
node.name = “alsa_output.pci-0000_01_00.1.hdmi-stereo”
device.description = “Tonga HDMI Audio [Radeon R9 285/380] (Radeon R9 285/380 HDMI Audio)”
device.icon_name = “audio-card-hdmi”
device.bus = “pci”
device.bus_path = “pci-0000:01:00.1”
node.pause-on-idle = “false”
factory.id = “18”
clock.quantum-limit = “8192”
client.id = “33”
node.driver = “true”
factory.mode = “merge”
audio.adapt.follower = “”
library.name = “audioconvert/libspa-audioconvert”
object.id = “72”
object.serial = “319”
device.enum.api = “udev”
api.alsa.card = “1”
api.alsa.card.name = “HDA ATI HDMI”
api.alsa.card.longname = “HDA ATI HDMI at 0xf0260000 irq 34”
device.plugged.usec = “4738045”
sysfs.path = “/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1”
device.subsystem = “sound”
device.vendor.id = “0x1002”
device.vendor.name = “Advanced Micro Devices, Inc. [AMD/ATI]”
device.product.id = “0xaad8”
device.product.name = “Tonga HDMI Audio [Radeon R9 285/380] (Radeon R9 285/380 HDMI Audio)”
device.name = “alsa_card.pci-0000_01_00.1”
device.nick = “HDA ATI HDMI”
api.alsa.use-acp = “true”
api.acp.auto-profile = “false”
api.acp.auto-port = “false”
api.dbus.ReserveDevice1 = “Audio1”
device.string = “1”
Ports:
hdmi-output-0: HDMI / DisplayPort (type: HDMI, priority: 5900, availability group: Legacy 1, available)
Active Port: hdmi-output-0
Formats:
pcm
dts-iec61937, format.rate = “{ "min": 32000, "max": 48000 }”
ac3-iec61937, format.rate = “{ "min": 32000, "max": 48000 }”
mpeg-iec61937, format.rate = “{ "min": 32000, "max": 48000 }”
mpeg2-aac-iec61937, format.rate = “{ "min": 32000, "max": 48000 }”
By unplugged both monitors and sounds:
Sink #45
State: SUSPENDED
Name: alsa_output.pci-0000_01_00.1.hdmi-stereo
Description: Tonga HDMI Audio [Radeon R9 285/380] (Radeon R9 285/380 HDMI Audio) Digital Stereo (HDMI)
Driver: PipeWire
Sample Specification: s16le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 4294967295
Mute: no
Volume: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
balance 0,00
Base Volume: 65536 / 100% / 0,00 dB
Monitor Source: alsa_output.pci-0000_01_00.1.hdmi-stereo.monitor
Latency: 0 usec, configured 0 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY SET_FORMATS
Properties:
object.path = “alsa:pcm:1:hdmi:1:playback”
api.alsa.path = “hdmi:1”
api.alsa.pcm.card = “1”
api.alsa.pcm.stream = “playback”
audio.channels = “2”
audio.position = “FL,FR”
device.routes = “1”
alsa.resolution_bits = “16”
device.api = “alsa”
device.class = “sound”
alsa.class = “generic”
alsa.subclass = “generic-mix”
alsa.name = “HDMI 0 *”
alsa.id = “HDMI 0”
alsa.subdevice = “0”
alsa.subdevice_name = “subdevice #0”
alsa.device = “3”
alsa.card = “1”
alsa.card_name = “HDA ATI HDMI”
alsa.long_card_name = “HDA ATI HDMI at 0xf0260000 irq 34”
alsa.driver_name = “snd_hda_intel”
device.profile.name = “hdmi-stereo”
device.profile.description = “Digital Stereo (HDMI)”
card.profile.device = “6”
device.id = “42”
factory.name = “api.alsa.pcm.sink”
priority.driver = “632”
priority.session = “632”
media.class = “Audio/Sink”
node.nick = “HDA ATI HDMI”
node.name = “alsa_output.pci-0000_01_00.1.hdmi-stereo”
device.description = “Tonga HDMI Audio [Radeon R9 285/380] (Radeon R9 285/380 HDMI Audio)”
device.icon_name = “audio-card-hdmi”
device.bus = “pci”
device.bus_path = “pci-0000:01:00.1”
node.pause-on-idle = “false”
factory.id = “18”
clock.quantum-limit = “8192”
client.id = “33”
node.driver = “true”
factory.mode = “merge”
audio.adapt.follower = “”
library.name = “audioconvert/libspa-audioconvert”
object.id = “45”
object.serial = “45”
device.enum.api = “udev”
api.alsa.card = “1”
api.alsa.card.name = “HDA ATI HDMI”
api.alsa.card.longname = “HDA ATI HDMI at 0xf0260000 irq 34”
device.plugged.usec = “3239599”
sysfs.path = “/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1”
device.subsystem = “sound”
device.vendor.id = “0x1002”
device.vendor.name = “Advanced Micro Devices, Inc. [AMD/ATI]”
device.product.id = “0xaad8”
device.product.name = “Tonga HDMI Audio [Radeon R9 285/380] (Radeon R9 285/380 HDMI Audio)”
device.name = “alsa_card.pci-0000_01_00.1”
device.nick = “HDA ATI HDMI”
api.alsa.use-acp = “true”
api.acp.auto-profile = “false”
api.acp.auto-port = “false”
api.dbus.ReserveDevice1 = “Audio1”
device.string = “1”
Ports:
hdmi-output-0: HDMI / DisplayPort (type: HDMI, priority: 5900, availability group: Legacy 1, available)
Active Port: hdmi-output-0
Formats:
pcm
dts-iec61937, format.rate = “{ "min": 32000, "max": 48000 }”
ac3-iec61937, format.rate = “{ "min": 32000, "max": 48000 }”
mpeg-iec61937, format.rate = “{ "min": 32000, "max": 48000 }”
mpeg2-aac-iec61937, format.rate = “{ "min": 32000, "max": 48000 }”
Sink #46
State: SUSPENDED
Name: alsa_output.pci-0000_00_1b.0.iec958-stereo
Description: Built-in Audio Digital Stereo (IEC958)
Driver: PipeWire
Sample Specification: s32le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 4294967295
Mute: no
Volume: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
balance 0,00
Base Volume: 65536 / 100% / 0,00 dB
Monitor Source: alsa_output.pci-0000_00_1b.0.iec958-stereo.monitor
Latency: 0 usec, configured 0 usec
Flags: HARDWARE HW_MUTE_CTRL DECIBEL_VOLUME LATENCY SET_FORMATS
Properties:
object.path = “alsa:pcm:0:iec958:0:playback”
api.alsa.path = “iec958:0”
api.alsa.pcm.card = “0”
api.alsa.pcm.stream = “playback”
audio.channels = “2”
audio.position = “FL,FR”
device.routes = “1”
alsa.resolution_bits = “16”
device.api = “alsa”
device.class = “sound”
alsa.class = “generic”
alsa.subclass = “generic-mix”
alsa.name = “ALC892 Digital”
alsa.id = “ALC892 Digital”
alsa.subdevice = “0”
alsa.subdevice_name = “subdevice #0”
alsa.device = “1”
alsa.card = “0”
alsa.card_name = “HDA Intel PCH”
alsa.long_card_name = “HDA Intel PCH at 0xf0410000 irq 33”
alsa.driver_name = “snd_hda_intel”
device.profile.name = “iec958-stereo”
device.profile.description = “Digital Stereo (IEC958)”
card.profile.device = “14”
device.id = “44”
factory.name = “api.alsa.pcm.sink”
priority.driver = “736”
priority.session = “736”
media.class = “Audio/Sink”
node.nick = “HDA Intel PCH”
node.name = “alsa_output.pci-0000_00_1b.0.iec958-stereo”
device.description = “Built-in Audio”
device.icon_name = “audio-card-iec958”
device.bus = “pci”
device.bus_path = “pci-0000:00:1b.0”
device.form_factor = “internal”
node.pause-on-idle = “false”
factory.id = “18”
clock.quantum-limit = “8192”
client.id = “33”
node.driver = “true”
factory.mode = “merge”
audio.adapt.follower = “”
library.name = “audioconvert/libspa-audioconvert”
object.id = “35”
object.serial = “46”
device.enum.api = “udev”
api.alsa.card = “0”
api.alsa.card.name = “HDA Intel PCH”
api.alsa.card.longname = “HDA Intel PCH at 0xf0410000 irq 33”
device.plugged.usec = “3287422”
sysfs.path = “/devices/pci0000:00/0000:00:1b.0/sound/card0”
device.subsystem = “sound”
device.vendor.id = “0x8086”
device.vendor.name = “Intel Corporation”
device.product.id = “0x8c20”
device.product.name = “8 Series/C220 Series Chipset High Definition Audio Controller”
device.name = “alsa_card.pci-0000_00_1b.0”
device.nick = “HDA Intel PCH”
api.alsa.use-acp = “true”
api.acp.auto-profile = “false”
api.acp.auto-port = “false”
api.dbus.ReserveDevice1 = “Audio0”
device.string = “0”
Ports:
iec958-stereo-output: Digital Output (S/PDIF) (type: SPDIF, priority: 0, availability unknown)
Active Port: iec958-stereo-output
Formats:
pcm