________________
> pulseaudio_ps_do
mycroft    221  0.0  0.7 1144424 14456 ?       S<sl 14:38   0:00 /usr/bin/pulseaudio --daemonize=no --log-target=journal
mycroft   3688  0.0  0.0   2836   756 ?        S+   15:22   0:00 grep pulseaudio
________________
> which pulseaudio
/usr/bin/pulseaudio
________________
> pidof pulseaudio
221
________________
> pulseaudio --version
pulseaudio 13.99.1
________________
> pactl info
Server String: /run/user/1050/pulse/native
Library Protocol Version: 33
Server Protocol Version: 33
Is Local: yes
Client Index: 52
Tile Size: 65472
User Name: mycroft
Host Name: localhost.localdomain
Server Name: pulseaudio
Server Version: 13.99.1
Default Sample Specification: s32le 2ch 48000Hz
Default Channel Map: front-left,front-right
Default Sink: alsa_output.platform-asoc-simple-card.0.stereo-fallback
Default Source: alsa_input.platform-asoc-simple-card.0.stereo-fallback
Cookie: 42ed:6812
________________
> pactl list
Module #0
	Name: module-device-restore
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically restore the volume/mute state of devices"
		module.version = "13.99.1"

Module #1
	Name: module-stream-restore
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically restore the volume/mute/device state of streams"
		module.version = "13.99.1"

Module #2
	Name: module-card-restore
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically restore profile of cards"
		module.version = "13.99.1"

Module #3
	Name: module-augment-properties
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Augment the property sets of streams with additional static information"
		module.version = "13.99.1"

Module #4
	Name: module-switch-on-port-available
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "David Henningsson"
		module.description = "Switches ports and profiles when devices are plugged/unplugged"
		module.version = "13.99.1"

Module #5
	Name: module-switch-on-connect
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Michael Terry"
		module.description = "When a sink/source is added, switch to it or conditionally switch to it"
		module.version = "13.99.1"

Module #6
	Name: module-udev-detect
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Detect available audio hardware and load matching drivers"
		module.version = "13.99.1"

Module #7
	Name: module-alsa-card
	Argument: device_id="0" name="platform-asoc-simple-card.0" card_name="alsa_card.platform-asoc-simple-card.0" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes avoid_resampling=no card_properties="module-udev-detect.discovered=1"
	Usage counter: 0
	Properties:
		module.author = "Lennart Poettering"
		module.description = "ALSA Card"
		module.version = "13.99.1"

Module #8
	Name: module-native-protocol-unix
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Native protocol (UNIX sockets)"
		module.version = "13.99.1"

Module #9
	Name: module-default-device-restore
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically restore the default sink and source"
		module.version = "13.99.1"

Module #10
	Name: module-always-sink
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Colin Guthrie"
		module.description = "Always keeps at least one sink loaded even if it's a null one"
		module.version = "13.99.1"

Module #11
	Name: module-intended-roles
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically set device of streams based on intended roles of devices"
		module.version = "13.99.1"

Module #12
	Name: module-suspend-on-idle
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "When a sink/source is idle for too long, suspend it"
		module.version = "13.99.1"

Module #13
	Name: module-console-kit
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Create a client for each ConsoleKit session of this user"
		module.version = "13.99.1"

Module #14
	Name: module-systemd-login
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Create a client for each login session of this user"
		module.version = "13.99.1"

Module #15
	Name: module-position-event-sounds
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Position event sounds between L and R depending on the position on screen of the widget triggering them."
		module.version = "13.99.1"

Module #16
	Name: module-role-cork
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Mute & cork streams with certain roles while others exist"
		module.version = "13.99.1"

Module #17
	Name: module-snap-policy
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Canonical Ltd"
		module.description = "Ubuntu Snap policy management"
		module.version = "13.99.1"

Module #18
	Name: module-filter-heuristics
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Colin Guthrie"
		module.description = "Detect when various filters are desirable"
		module.version = "13.99.1"

Module #19
	Name: module-filter-apply
	Argument:
	Usage counter: n/a
	Properties:
		module.author = "Colin Guthrie"
		module.description = "Load filter sinks automatically when needed"
		module.version = "13.99.1"

Module #20
	Name: module-x11-publish
	Argument: display=:1 xauthority=
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "X11 credential publisher"
		module.version = "13.99.1"

Module #21
	Name: module-x11-cork-request
	Argument: display=:1 xauthority=
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Synthesize X11 media key events when cork/uncork is requested"
		module.version = "13.99.1"

Module #22
	Name: module-x11-xsmp
	Argument: display=:1 xauthority= session_manager=local/localhost.localdomain:@/tmp/.ICE-unix/595,unix/localhost.localdomain:/tmp/.ICE-unix/595
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "X11 session management"
		module.version = "13.99.1"

Sink #0
	State: SUSPENDED
	Name: alsa_output.platform-asoc-simple-card.0.stereo-fallback
	Description: Built-in Audio Stereo
	Driver: module-alsa-card.c
	Sample Specification: s32le 2ch 48000Hz
	Channel Map: front-left,front-right
	Owner Module: 7
	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.platform-asoc-simple-card.0.stereo-fallback.monitor
	Latency: 0 usec, configured 0 usec
	Flags: HARDWARE DECIBEL_VOLUME LATENCY
	Properties:
		alsa.resolution_bits = "32"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "simple-card_codec_link snd-soc-dummy-dai-0"
		alsa.id = "simple-card_codec_link snd-soc-dummy-dai-0"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "snd_rpi_simple_card"
		alsa.long_card_name = "snd_rpi_simple_card"
		alsa.driver_name = "snd_soc_simple_card"
		device.bus_path = "platform-asoc-simple-card.0"
		sysfs.path = "/devices/platform/asoc-simple-card.0/sound/card0"
		device.form_factor = "internal"
		device.string = "hw:0"
		device.buffering.buffer_size = "524288"
		device.buffering.fragment_size = "262144"
		device.access_mode = "mmap+timer"
		device.profile.name = "stereo-fallback"
		device.profile.description = "Stereo"
		device.description = "Built-in Audio Stereo"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card"
	Ports:
		analog-output: Analog Output (priority: 9900)
	Active Port: analog-output
	Formats:
		pcm

Source #0
	State: SUSPENDED
	Name: alsa_output.platform-asoc-simple-card.0.stereo-fallback.monitor
	Description: Monitor of Built-in Audio Stereo
	Driver: module-alsa-card.c
	Sample Specification: s32le 2ch 48000Hz
	Channel Map: front-left,front-right
	Owner Module: 7
	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 of Sink: alsa_output.platform-asoc-simple-card.0.stereo-fallback
	Latency: 0 usec, configured 0 usec
	Flags: DECIBEL_VOLUME LATENCY
	Properties:
		device.description = "Monitor of Built-in Audio Stereo"
		device.class = "monitor"
		alsa.card = "0"
		alsa.card_name = "snd_rpi_simple_card"
		alsa.long_card_name = "snd_rpi_simple_card"
		alsa.driver_name = "snd_soc_simple_card"
		device.bus_path = "platform-asoc-simple-card.0"
		sysfs.path = "/devices/platform/asoc-simple-card.0/sound/card0"
		device.form_factor = "internal"
		device.string = "0"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card"
	Formats:
		pcm

Source #1
	State: SUSPENDED
	Name: alsa_input.platform-asoc-simple-card.0.stereo-fallback
	Description: Built-in Audio Stereo
	Driver: module-alsa-card.c
	Sample Specification: s32le 2ch 48000Hz
	Channel Map: front-left,front-right
	Owner Module: 7
	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 of Sink: n/a
	Latency: 0 usec, configured 0 usec
	Flags: HARDWARE DECIBEL_VOLUME LATENCY
	Properties:
		alsa.resolution_bits = "32"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "simple-card_codec_link snd-soc-dummy-dai-0"
		alsa.id = "simple-card_codec_link snd-soc-dummy-dai-0"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "snd_rpi_simple_card"
		alsa.long_card_name = "snd_rpi_simple_card"
		alsa.driver_name = "snd_soc_simple_card"
		device.bus_path = "platform-asoc-simple-card.0"
		sysfs.path = "/devices/platform/asoc-simple-card.0/sound/card0"
		device.form_factor = "internal"
		device.string = "hw:0"
		device.buffering.buffer_size = "524288"
		device.buffering.fragment_size = "262144"
		device.access_mode = "mmap+timer"
		device.profile.name = "stereo-fallback"
		device.profile.description = "Stereo"
		device.description = "Built-in Audio Stereo"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card"
	Ports:
		analog-input: Analog Input (priority: 10000)
	Active Port: analog-input
	Formats:
		pcm

Client #0
	Driver: module-systemd-login.c
	Owner Module: 14
	Properties:
		application.name = "Login Session c1"
		systemd-login.session = "c1"

Client #7
	Driver: module-x11-xsmp.c
	Owner Module: 22
	Properties:
		application.name = "XSMP Session on KDE as 1028c1d320b210000155013913900000005950002"
		xsmp.vendor = "KDE"
		xsmp.client.id = "1028c1d320b210000155013913900000005950002"

Client #8
	Driver: protocol-native.c
	Owner Module: 8
	Properties:
		application.name = "QPulse"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.process.id = "611"
		application.process.user = "mycroft"
		application.process.host = "localhost.localdomain"
		application.process.binary = "plasmashell.bin"
		application.language = "C"
		window.x11.display = ":1"
		application.process.machine_id = "b5f4929aa5094ce49896d33ef2589e89"
		application.process.session_id = "c1"

Client #10
	Driver: protocol-native.c
	Owner Module: 8
	Properties:
		application.name = "VLC media player (LibVLC 3.0.9.2)"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.VideoLAN.VLC"
		application.version = "3.0.9.2"
		application.icon_name = "vlc"
		application.language = "C"
		application.process.id = "262"
		media.role = "phone"
		application.process.user = "mycroft"
		application.process.host = "localhost.localdomain"
		application.process.binary = "python3.8"
		application.process.machine_id = "b5f4929aa5094ce49896d33ef2589e89"

Client #16
	Driver: module-systemd-login.c
	Owner Module: 14
	Properties:
		application.name = "Login Session c6"
		systemd-login.session = "c6"

Client #22
	Driver: protocol-native.c
	Owner Module: 8
	Properties:
		application.name = "libcanberra"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.version = "0.30"
		application.id = "org.freedesktop.libcanberra"
		application.process.id = "611"
		application.process.user = "mycroft"
		application.process.host = "localhost.localdomain"
		application.process.binary = "plasmashell.bin"
		application.language = "C"
		window.x11.display = ":1"
		application.process.machine_id = "b5f4929aa5094ce49896d33ef2589e89"
		application.process.session_id = "c1"

Client #27
	Driver: module-systemd-login.c
	Owner Module: 14
	Properties:
		application.name = "Login Session c7"
		systemd-login.session = "c7"

Client #53
	Driver: protocol-native.c
	Owner Module: 8
	Properties:
		application.name = "pactl"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.process.id = "3693"
		application.process.user = "mycroft"
		application.process.host = "localhost.localdomain"
		application.process.binary = "pactl"
		application.language = "C"
		application.process.machine_id = "b5f4929aa5094ce49896d33ef2589e89"
		application.process.session_id = "c7"

Sample #0
	Name: audio-volume-change
	Sample Specification: s16le 2ch 44100Hz
	Channel Map: front-left,front-right
	Volume: (invalid)
	        balance 0.00
	Duration: 0.1s
	Size: 11.5 KiB
	Lazy: no
	Filename: n/a
	Properties:
		media.role = "event"
		event.id = "audio-volume-change"
		event.description = "Volume Control Feedback Sound"
		media.name = "audio-volume-change"
		media.filename = "/usr/share/sounds/freedesktop/stereo/audio-volume-change.oga"
		application.name = "libcanberra"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.version = "0.30"
		application.id = "org.freedesktop.libcanberra"
		application.process.id = "611"
		application.process.user = "mycroft"
		application.process.host = "localhost.localdomain"
		application.process.binary = "plasmashell.bin"
		application.language = "C"
		window.x11.display = ":1"
		application.process.machine_id = "b5f4929aa5094ce49896d33ef2589e89"
		application.process.session_id = "c1"

Card #0
	Name: alsa_card.platform-asoc-simple-card.0
	Driver: module-alsa-card.c
	Owner Module: 7
	Properties:
		alsa.card = "0"
		alsa.card_name = "snd_rpi_simple_card"
		alsa.long_card_name = "snd_rpi_simple_card"
		alsa.driver_name = "snd_soc_simple_card"
		device.bus_path = "platform-asoc-simple-card.0"
		sysfs.path = "/devices/platform/asoc-simple-card.0/sound/card0"
		device.form_factor = "internal"
		device.string = "0"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card"
	Profiles:
		input:stereo-fallback: Stereo Input (sinks: 0, sources: 1, priority: 51, available: yes)
		input:multichannel-input: Multichannel Input (sinks: 0, sources: 1, priority: 1, available: yes)
		output:stereo-fallback: Stereo Output (sinks: 1, sources: 0, priority: 5100, available: yes)
		output:stereo-fallback+input:stereo-fallback: Stereo Output + Stereo Input (sinks: 1, sources: 1, priority: 5151, available: yes)
		output:stereo-fallback+input:multichannel-input: Stereo Output + Multichannel Input (sinks: 1, sources: 1, priority: 5101, available: yes)
		output:multichannel-output: Multichannel Output (sinks: 1, sources: 0, priority: 100, available: yes)
		output:multichannel-output+input:stereo-fallback: Multichannel Output + Stereo Input (sinks: 1, sources: 1, priority: 151, available: yes)
		output:multichannel-output+input:multichannel-input: Multichannel Duplex (sinks: 1, sources: 1, priority: 101, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: output:stereo-fallback+input:stereo-fallback
	Ports:
		analog-input: Analog Input (priority: 10000, latency offset: 0 usec)
			Part of profile(s): input:stereo-fallback, output:stereo-fallback+input:stereo-fallback, output:multichannel-output+input:stereo-fallback
		multichannel-input: Multichannel Input (priority: 0, latency offset: 0 usec)
			Part of profile(s): input:multichannel-input, output:stereo-fallback+input:multichannel-input, output:multichannel-output+input:multichannel-input
		analog-output: Analog Output (priority: 9900, latency offset: 0 usec)
			Part of profile(s): output:stereo-fallback, output:stereo-fallback+input:stereo-fallback, output:stereo-fallback+input:multichannel-input
		multichannel-output: Multichannel Output (priority: 0, latency offset: 0 usec)
			Part of profile(s): output:multichannel-output, output:multichannel-output+input:stereo-fallback, output:multichannel-output+input:multichannel-input
________________
> cat /etc/pulse/daemon.conf
# This file is part of PulseAudio.
#
# PulseAudio is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PulseAudio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.

## Configuration file for the PulseAudio daemon. See pulse-daemon.conf(5) for
## more information. Default values are commented out.  Use either ; or # for
## commenting.

; daemonize = no
; fail = yes
; allow-module-loading = yes
; allow-exit = yes
; use-pid-file = yes
; system-instance = no
; local-server-type = user
; enable-shm = yes
; enable-memfd = yes
; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
; lock-memory = no
; cpu-limit = no

; high-priority = yes
; nice-level = -11

; realtime-scheduling = yes
; realtime-priority = 5

; exit-idle-time = 20
; scache-idle-time = 20

; dl-search-path = (depends on architecture)

; load-default-script-file = yes
; default-script-file = /etc/pulse/default.pa

; log-target = auto
; log-level = notice
; log-meta = no
; log-time = no
; log-backtrace = 0

; resample-method = speex-float-1
; avoid-resampling = false
; enable-remixing = yes
; remixing-use-all-sink-channels = yes
; remixing-produce-lfe = no
; remixing-consume-lfe = no
; lfe-crossover-freq = 0

; flat-volumes = no

; rescue-streams = yes

; rlimit-fsize = -1
; rlimit-data = -1
; rlimit-stack = -1
; rlimit-core = -1
; rlimit-as = -1
; rlimit-rss = -1
; rlimit-nproc = -1
; rlimit-nofile = 256
; rlimit-memlock = -1
; rlimit-locks = -1
; rlimit-sigpending = -1
; rlimit-msgqueue = -1
; rlimit-nice = 31
; rlimit-rtprio = 9
; rlimit-rttime = 200000

default-sample-format = s32le
default-sample-rate = 48000
; alternate-sample-rate = 48000
default-sample-channels = 2
; default-channel-map = front-left,front-right

; default-fragments = 4
; default-fragment-size-msec = 25

; enable-deferred-volume = yes
deferred-volume-safety-margin-usec = 1
; deferred-volume-extra-delay-usec = 0
________________
> cat /etc/pulse/client.conf
# This file is part of PulseAudio.
#
# PulseAudio is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PulseAudio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.

## Configuration file for PulseAudio clients. See pulse-client.conf(5) for
## more information. Default values are commented out.  Use either ; or # for
## commenting.

; default-sink =
; default-source =
; default-server =
; default-dbus-server =

; autospawn = yes
; daemon-binary = /usr/bin/pulseaudio
; extra-arguments = --log-target=syslog

; cookie-file =

; enable-shm = yes
; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB

; auto-connect-localhost = no
; auto-connect-display = no
________________
> cat /etc/pulse/default.pa
#!/usr/bin/pulseaudio -nF
#
# This file is part of PulseAudio.
#
# PulseAudio is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PulseAudio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.

# This startup script is used only if PulseAudio is started per-user
# (i.e. not in system mode)

.fail

### Automatically restore the volume of streams and devices
load-module module-device-restore
load-module module-stream-restore
load-module module-card-restore

### Automatically augment property information from .desktop files
### stored in /usr/share/application
load-module module-augment-properties

### Should be after module-*-restore but before module-*-detect
load-module module-switch-on-port-available

### Use hot-plugged devices like Bluetooth or USB automatically (LP: #1702794)
.ifexists module-switch-on-connect.so
load-module module-switch-on-connect
.endif

### Load audio drivers statically
### (it's probably better to not load these drivers manually, but instead
### use module-udev-detect -- see below -- for doing this automatically)
#load-module module-alsa-sink
#load-module module-alsa-source device=hw:1,0
#load-module module-oss device="/dev/dsp" sink_name=output source_name=input
#load-module module-oss-mmap device="/dev/dsp" sink_name=output source_name=input
#load-module module-null-sink
#load-module module-pipe-sink

### Automatically load driver modules depending on the hardware available
.ifexists module-udev-detect.so
load-module module-udev-detect
.else
### Use the static hardware detection module (for systems that lack udev support)
load-module module-detect
.endif

### Automatically connect sink and source if JACK server is present
.ifexists module-jackdbus-detect.so
.nofail
load-module module-jackdbus-detect channels=2
.fail
.endif

### Automatically load driver modules for Bluetooth hardware
.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.endif

.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif

### Load several protocols
.ifexists module-esound-protocol-unix.so
load-module module-esound-protocol-unix
.endif
load-module module-native-protocol-unix

### Network access (may be configured with paprefs, so leave this commented
### here if you plan to use paprefs)
#load-module module-esound-protocol-tcp
#load-module module-native-protocol-tcp
#load-module module-zeroconf-publish

### Load the RTP receiver module (also configured via paprefs, see above)
#load-module module-rtp-recv

### Load the RTP sender module (also configured via paprefs, see above)
#load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 sink_properties="device.description='RTP Multicast Sink'"
#load-module module-rtp-send source=rtp.monitor

### Load additional modules from GSettings. This can be configured with the paprefs tool.
### Please keep in mind that the modules configured by paprefs might conflict with manually
### loaded modules.
.ifexists module-gsettings.so
.nofail
load-module module-gsettings
.fail
.endif


### Automatically restore the default sink/source when changed by the user
### during runtime
### NOTE: This should be loaded as early as possible so that subsequent modules
### that look up the default sink/source get the right value
load-module module-default-device-restore

### Make sure we always have a sink around, even if it is a null sink.
load-module module-always-sink

### Honour intended role device property
load-module module-intended-roles

### Automatically suspend sinks/sources that become idle for too long
load-module module-suspend-on-idle

### If autoexit on idle is enabled we want to make sure we only quit
### when no local session needs us anymore.
.ifexists module-console-kit.so
load-module module-console-kit
.endif
.ifexists module-systemd-login.so
load-module module-systemd-login
.endif

### Enable positioned event sounds
load-module module-position-event-sounds

### Cork music/video streams when a phone stream is active
load-module module-role-cork

### Block audio recording for snap confined packages unless they have
### the "pulseaudio" or "audio-record" interfaces plugged.
.ifexists module-snap-policy.so
load-module module-snap-policy
.endif

### Modules to allow autoloading of filters (such as echo cancellation)
### on demand. module-filter-heuristics tries to determine what filters
### make sense, and module-filter-apply does the heavy-lifting of
### loading modules and rerouting streams.
load-module module-filter-heuristics
load-module module-filter-apply

### Make some devices default
#set-default-sink output
#set-default-source input
set-default-sink 0
set-default-source 1

________________
> cat /etc/pulse/system.pa
#!/usr/bin/pulseaudio -nF
#
# This file is part of PulseAudio.
#
# PulseAudio is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PulseAudio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.

# This startup script is used only if PulseAudio is started in system
# mode.

### Automatically restore the volume of streams and devices
load-module module-device-restore
load-module module-stream-restore
load-module module-card-restore

### Automatically load driver modules depending on the hardware available
.ifexists module-udev-detect.so
load-module module-udev-detect
.else
### Use the static hardware detection module (for systems that lack udev/hal support)
load-module module-detect
.endif

### Load several protocols
.ifexists module-esound-protocol-unix.so
load-module module-esound-protocol-unix
.endif
load-module module-native-protocol-unix

### Automatically restore the default sink/source when changed by the user
### during runtime
### NOTE: This should be loaded as early as possible so that subsequent modules
### that look up the default sink/source get the right value
load-module module-default-device-restore

### Make sure we always have a sink around, even if it is a null sink.
load-module module-always-sink

### Automatically suspend sinks/sources that become idle for too long
load-module module-suspend-on-idle

### Enable positioned event sounds
load-module module-position-event-sounds
________________
> ls -alt /dev/snd/*
crw-rw----+ 1 root audio 116, 33 Feb 14  2019 /dev/snd/timer
crw-rw----+ 1 root audio 116,  0 Feb 14  2019 /dev/snd/controlC0
crw-rw----+ 1 root audio 116, 24 Feb 14  2019 /dev/snd/pcmC0D0c
crw-rw----+ 1 root audio 116, 16 Feb 14  2019 /dev/snd/pcmC0D0p
crw-rw----+ 1 root audio 116,  1 Feb 14  2019 /dev/snd/seq

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root  60 Feb 14  2019 .
drwxr-xr-x 3 root root 160 Feb 14  2019 ..
lrwxrwxrwx 1 root root  12 Feb 14  2019 platform-asoc-simple-card.0 -> ../controlC0
________________
> lsof /dev/snd/*
COMMAND   PID    USER   FD   TYPE DEVICE SIZE/OFF  NODE NAME
pulseaudi 221 mycroft   21u   CHR  116,0      0t0 17195 /dev/snd/controlC0
pulseaudi 221 mycroft   27u   CHR  116,0      0t0 17195 /dev/snd/controlC0
python3   265 mycroft  mem    CHR 116,24          17194 /dev/snd/pcmC0D0c
python3   265 mycroft    8r   CHR 116,33      0t0 16898 /dev/snd/timer
python3   265 mycroft    9u   CHR 116,24      0t0 17194 /dev/snd/pcmC0D0c
python3   265 mycroft   10u   CHR  116,0      0t0 17195 /dev/snd/controlC0
________________
> jacks_do
card=0
________________
> aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
samplerate
    Rate Converter Plugin Using Samplerate Library
speexrate
    Rate Converter Plugin Using Speex Resampler
jack
    JACK Audio Connection Kit
oss
    Open Sound System
pulse
    PulseAudio Sound Server
upmix
    Plugin for channel upmix (4,6,8)
vdownmix
    Plugin for channel downmix (stereo) with a simple spacialization
VocalFusion
VF_ASR_Comms_(LR)
VF_ASR_(L)
VF_Comms_(R)
default
sysdefault:CARD=sndrpisimplecar
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Default Audio Device
dmix:CARD=sndrpisimplecar,DEV=0
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Direct sample mixing device
dsnoop:CARD=sndrpisimplecar,DEV=0
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Direct sample snooping device
hw:CARD=sndrpisimplecar,DEV=0
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Direct hardware device without any conversions
plughw:CARD=sndrpisimplecar,DEV=0
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Hardware device with all software conversions
usbstream:CARD=sndrpisimplecar
    snd_rpi_simple_card
    USB Stream Output
________________
> arecord -L
null
    Discard all samples (playback) or generate zero samples (capture)
samplerate
    Rate Converter Plugin Using Samplerate Library
speexrate
    Rate Converter Plugin Using Speex Resampler
jack
    JACK Audio Connection Kit
oss
    Open Sound System
pulse
    PulseAudio Sound Server
upmix
    Plugin for channel upmix (4,6,8)
vdownmix
    Plugin for channel downmix (stereo) with a simple spacialization
VocalFusion
VF_ASR_Comms_(LR)
VF_ASR_(L)
VF_Comms_(R)
default
sysdefault:CARD=sndrpisimplecar
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Default Audio Device
dmix:CARD=sndrpisimplecar,DEV=0
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Direct sample mixing device
dsnoop:CARD=sndrpisimplecar,DEV=0
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Direct sample snooping device
hw:CARD=sndrpisimplecar,DEV=0
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Direct hardware device without any conversions
plughw:CARD=sndrpisimplecar,DEV=0
    snd_rpi_simple_card, simple-card_codec_link snd-soc-dummy-dai-0
    Hardware device with all software conversions
usbstream:CARD=sndrpisimplecar
    snd_rpi_simple_card
    USB Stream Output
________________
> alsa_info_do
upload=true&script=true&cardinfo=
!!################################
!!ALSA Information Script v 0.4.64
!!################################

!!Script ran on: Thu Feb 17 15:22:06 UTC 2022


!!Linux Distribution
!!------------------

Ubuntu 20.04.3 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 20.04.3 LTS" NAME="Ubuntu" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 20.04.3 LTS" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" UBUNTU_CODENAME=focal


!!DMI Information
!!---------------

Manufacturer:
Product Name:
Product Version:
Firmware Version:
Board Vendor:
Board Name:


!!ACPI Device Status Information
!!---------------



!!Kernel Information
!!------------------

Kernel release:    4.19.127-v8+
Operating System:  GNU/Linux
Architecture:      aarch64
Processor:         aarch64
SMP Enabled:       Yes


!!ALSA Version
!!------------

Driver version:     k4.19.127-v8+
Library version:    1.2.2
Utilities version:  1.2.2


!!Loaded ALSA modules
!!-------------------

snd_soc_simple_card


!!Sound Servers on this system
!!----------------------------

Pulseaudio:
      Installed - Yes (/usr/bin/pulseaudio)
      Running - Yes


!!Soundcards recognised by ALSA
!!-----------------------------

 0 [sndrpisimplecar]: snd_rpi_simple_ - snd_rpi_simple_card
                      snd_rpi_simple_card


!!PCI Soundcards installed in the system
!!--------------------------------------



!!Modprobe options (Sound related)
!!--------------------------------

snd_pcsp: index=-2
snd_usb_audio: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2


!!Loaded sound module options
!!---------------------------

!!Module: snd_soc_simple_card
	* :


!!ALSA Device nodes
!!-----------------

crw-rw----+ 1 root audio 116,  0 Feb 14  2019 /dev/snd/controlC0
crw-rw----+ 1 root audio 116, 24 Feb 14  2019 /dev/snd/pcmC0D0c
crw-rw----+ 1 root audio 116, 16 Feb 14  2019 /dev/snd/pcmC0D0p
crw-rw----+ 1 root audio 116,  1 Feb 14  2019 /dev/snd/seq
crw-rw----+ 1 root audio 116, 33 Feb 14  2019 /dev/snd/timer

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root  60 Feb 14  2019 .
drwxr-xr-x 3 root root 160 Feb 14  2019 ..
lrwxrwxrwx 1 root root  12 Feb 14  2019 platform-asoc-simple-card.0 -> ../controlC0


!!ALSA configuration files
!!------------------------

!!User specific config file (~/.asoundrc)

#
# The I2S hardware device. Refer to it by name as it will not always
# be the same card number in every system.
#
pcm.i2s_48k {
    type hw
    card sndrpisimplecar
    device 0
    format S32_LE
    channels 2
    rate 48000
}

#
# VocalFusion playback device.
# plug - rate and format conversion
# softvol - control for alsamixer
# dmix - allow device to be shared
#
pcm.VocalFusion {
    type plug
    slave.pcm {
	type softvol
	slave.pcm {
	    type dmix
	    ipc_key 256
	    ipc_perm 0666
	    slave.pcm "i2s_48k"
	}
	control {
	    name "Playback"
	    card sndrpisimplecar
	}
    }
}

#
# VocalFusion Comms & ASR recording.
#
pcm.VF_ASR_Comms_(LR) {
    type plug
    slave.pcm {
	type softvol
	slave.pcm {
	    type dsnoop
	    ipc_key 512
	    ipc_perm 0666
	    slave.pcm "i2s_48k"
	}
	control {
	    name "Record"
	    card sndrpisimplecar
	}
    }
}


#
# VocalFusion ASR recording.
#
pcm.VF_ASR_(L) {
    type plug
    slave.pcm {
	type softvol
	slave.pcm {
	    type dsnoop
	    ipc_key 512
	    ipc_perm 0666
	    slave.pcm "i2s_48k"
	    bindings [0]
	}
	control {
	    name "Record"
	    card sndrpisimplecar
	}
    }
}

#
# VocalFusion Comms recording.
#
pcm.VF_Comms_(R) {
    type plug
    slave.pcm {
	type softvol
	slave.pcm {
	    type dsnoop
	    ipc_key 512
	    ipc_perm 0666
	    slave.pcm "i2s_48k"
	    bindings [1]
	}
	control {
	    name "Record"
	    card sndrpisimplecar
	}
    }
}

#
# Default devices.
#
pcm.!default {
    type asym
    capture.pcm "VF_ASR_(L)"
    playback.pcm "VocalFusion"
}


!!System wide config file (/etc/asound.conf)

#
# The I2S hardware device. Refer to it by name as it will not always
# be the same card number in every system.
#
pcm.i2s_48k {
    type hw
    card sndrpisimplecar
    device 0
    format S32_LE
    channels 2
    rate 48000
}

#
# VocalFusion playback device.
# plug - rate and format conversion
# softvol - control for alsamixer
# dmix - allow device to be shared
#
pcm.VocalFusion {
    type plug
    slave.pcm {
	type softvol
	slave.pcm {
	    type dmix
	    ipc_key 256
	    ipc_perm 0666
	    slave.pcm "i2s_48k"
	}
	control {
	    name "Playback"
	    card sndrpisimplecar
	}
    }
}

#
# VocalFusion Comms & ASR recording.
#
pcm.VF_ASR_Comms_(LR) {
    type plug
    slave.pcm {
	type softvol
	slave.pcm {
	    type dsnoop
	    ipc_key 512
	    ipc_perm 0666
	    slave.pcm "i2s_48k"
	}
	control {
	    name "Record"
	    card sndrpisimplecar
	}
    }
}


#
# VocalFusion ASR recording.
#
pcm.VF_ASR_(L) {
    type plug
    slave.pcm {
	type softvol
	slave.pcm {
	    type dsnoop
	    ipc_key 512
	    ipc_perm 0666
	    slave.pcm "i2s_48k"
	    bindings [0]
	}
	control {
	    name "Record"
	    card sndrpisimplecar
	}
    }
}

#
# VocalFusion Comms recording.
#
pcm.VF_Comms_(R) {
    type plug
    slave.pcm {
	type softvol
	slave.pcm {
	    type dsnoop
	    ipc_key 512
	    ipc_perm 0666
	    slave.pcm "i2s_48k"
	    bindings [1]
	}
	control {
	    name "Record"
	    card sndrpisimplecar
	}
    }
}

#
# Default devices.
#
pcm.!default {
    type asym
    capture.pcm "VF_ASR_(L)"
    playback.pcm "VocalFusion"
}


!!Aplay/Arecord output
!!--------------------

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: sndrpisimplecar [snd_rpi_simple_card], device 0: simple-card_codec_link snd-soc-dummy-dai-0 [simple-card_codec_link snd-soc-dummy-dai-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

ARECORD

**** List of CAPTURE Hardware Devices ****
card 0: sndrpisimplecar [snd_rpi_simple_card], device 0: simple-card_codec_link snd-soc-dummy-dai-0 [simple-card_codec_link snd-soc-dummy-dai-0]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

!!Amixer output
!!-------------

!!-------Mixer controls for card sndrpisimplecar

Card hw:0 'sndrpisimplecar'/'snd_rpi_simple_card'
  Mixer name	: ''
  Components	: ''
  Controls      : 2
  Simple ctrls  : 2
Simple mixer control 'Playback',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 255
  Front Left: 255 [100%]
  Front Right: 255 [100%]
Simple mixer control 'Record',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 255
  Front Left: 255 [100%]
  Front Right: 255 [100%]


!!Alsactl output
!!--------------

--startcollapse--
state.sndrpisimplecar {
	control.1 {
		iface MIXER
		name Record
		value.0 255
		value.1 255
		comment {
			access 'read write user'
			type INTEGER
			count 2
			range '0 - 255'
			tlv '0000000100000008ffffec1400000014'
			dbmin -5100
			dbmax 0
			dbvalue.0 0
			dbvalue.1 0
		}
	}
	control.2 {
		iface MIXER
		name Playback
		value.0 255
		value.1 255
		comment {
			access 'read write user'
			type INTEGER
			count 2
			range '0 - 255'
			tlv '0000000100000008ffffec1400000014'
			dbmin -5100
			dbmax 0
			dbvalue.0 0
			dbvalue.1 0
		}
	}
}
--endcollapse--


!!All Loaded Modules
!!------------------

bcm2835_codec
bcm2835_mmal_vchiq
bcm2835_v4l2
binfmt_misc
brcmfmac
brcmutil
cfg80211
drm
drm_kms_helper
drm_panel_orientation_quirks
evdev
fb_sys_fops
gpu_sched
hwmon
i2c_bcm2835
i2c_dev
i2s_master_loader
ip_tables
ipt_MASQUERADE
iptable_filter
iptable_mangle
iptable_nat
joydev
media
nf_conntrack
nf_defrag_ipv4
nf_defrag_ipv6
nf_log_common
nf_log_ipv4
nf_log_ipv6
nf_nat
nf_nat_ipv4
raspberrypi_hwmon
regmap_mmio
rfkill
rpi_backlight
rpi_ft5406
rpivid_mem
sch_fq_codel
sg
snd
snd_compress
snd_pcm
snd_pcm_dmaengine
snd_soc_bcm2835_i2s
snd_soc_core
snd_soc_simple_card
snd_soc_simple_card_utils
snd_timer
spi_bcm2835
spidev
syscopyarea
sysfillrect
sysimgblt
uio
uio_pdrv_genirq
v3d
v4l2_common
v4l2_mem2mem
vc4
vc_sm_cma
videobuf2_common
videobuf2_dma_contig
videobuf2_memops
videobuf2_v4l2
videobuf2_vmalloc
videodev
x_tables
xt_CHECKSUM
xt_LOG
xt_REDIRECT
xt_conntrack
xt_limit
xt_multiport
xt_nat
xt_recent
xt_tcpudp


!!ALSA/HDA dmesg
!!--------------

[   45.163750] asoc-simple-card asoc-simple-card.0: ASoC: CPU DAI fe203000.i2s not registered - will retry
[   45.183467] asoc-simple-card asoc-simple-card.0: snd-soc-dummy-dai <-> fe203000.i2s mapping ok
[   45.183477] asoc-simple-card asoc-simple-card.0: ASoC: no DMI vendor name!