我无法在 Ubuntu 上播放任何声音。这与硬件无关，因为一切都在并行的 Windows 安装中运行……可能是因为我尝试设置 icecast 服务器，在此过程中我意外删除了错误的 pulseaudio 模块。遗憾的是我没有立即意识到这一点，现在我不知道我删除了哪一个。我怎样才能恢复声音？
from lshw:
*-multimedia UNCLAIMED
description: Audio device
product: Intel Corporation
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm msi cap_list
configuration: latency=0
resources: iomemory:600-5ff iomemory:600-5ff memory:604b118000-604b11bfff memory:604b000000-604b0fffff
$ cat /proc/asound/cards
1 [Loopback ]: Loopback - Loopback
Loopback 1
$ pactl list modules 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-switch-on-connect
6 module-udev-detect
7 module-alsa-card device_id="1" name="platform-snd_aloop.0" card_name="alsa_card.platform-snd_aloop.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"
8 module-native-protocol-unix
9 module-default-device-restore
10 module-always-sink
11 module-intended-roles
12 module-suspend-on-idle
13 module-console-kit
14 module-systemd-login
15 module-position-event-sounds
16 module-role-cork
17 module-snap-policy
18 module-filter-heuristics
19 module-filter-apply
20 module-x11-publish display=:0 xauthority=/run/user/1001/gdm/Xauthority
21 module-x11-cork-request display=:0 xauthority=/run/user/1001/gdm/Xauthority
22 module-x11-xsmp display=:0 xauthority=/run/user/1001/gdm/Xauthority session_manager=local/XPS:@/tmp/.ICE-unix/1914,unix/XPS:/tmp/.ICE-unix/1914