佐々木樣、野宮樣

ご返事ありがとうございます。
私はDebianと長年付き会ってはいるのですが
知識はあまりない人間です。
よろしくお願いいたします。


$  dpkg -l | grep pulseaudio
ii  gstreamer1.0-pulseaudio:amd64         1.18.4-2                        amd64        GStreamer plugin for PulseAudio (transitional package)
ii  pulseaudio                            14.2-2                          amd64        PulseAudio sound server
ii  pulseaudio-module-bluetooth           14.2-2                          amd64        Bluetooth module for PulseAudio sound server
ii  pulseaudio-utils                      14.2-2                          amd64        Command line tools for the PulseAudio sound server

* /run/user/{uid}/pulse 以下のソケット
所有者、グループはともにユーザです。

* /etc/passwd:
pulse:x:111:116:PulseAudio daemon,,,:/run/pulse:/usr/sbin/nologin

$  pactl list short
0 module-device-restore
1 module-stream-restore
2 module-card-restore
3 module-augment-properties
4 module-switch-on-port-available
5 module-udev-detect
6 module-alsa-card device_id="1" name="pci-0000_0b_00.1" card_name="alsa_card.pci-0000_0b_00.1" 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"
7 module-alsa-card device_id="0" name="pci-0000_12_00.3" card_name="alsa_card.pci-0000_12_00.3" 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"
8 module-bluetooth-policy
9 module-bluetooth-discover
10 module-bluez5-discover
11 module-native-protocol-unix
12 module-default-device-restore
13 module-always-sink
14 module-null-sink sink_name=auto_null sink_properties='device.description="Sortie factice"'
15 module-intended-roles
16 module-suspend-on-idle
17 module-systemd-login
18 module-position-event-sounds
19 module-role-cork
20 module-filter-heuristics
21 module-filter-apply
0 auto_null module-null-sink.c s16le 2ch 44100Hz SUSPENDED
0 auto_null.monitor module-null-sink.c s16le 2ch 44100Hz SUSPENDED
0 module-systemd-login.c (null)
1 protocol-native.c gnome-shell
2 protocol-native.c gsd-media-keys
3 protocol-native.c firefox-esr
4 protocol-native.c firefox-esr
5 protocol-native.c pactl
0 alsa_card.pci-0000_0b_00.1 module-alsa-card.c
1 alsa_card.pci-0000_12_00.3 module-alsa-card.c