1) 几个月来，我一直在使用 Ubuntu 18.04 和 Windows 10 双启动。今天，Ubunutu 上的声音突然停止工作。活动 -> 声音菜单仅显示“虚拟输出”。但在 Windows 上一切正常。
2）lsmod 的输出是：
rohit@rohitUb18043LTS:~$ lsmod | grep snd_
snd_seq_midi 20480 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_seq 69632 2 snd_seq_midi,snd_seq_midi_event
snd_rawmidi 36864 1 snd_seq_midi
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
snd_soc_dmic 16384 0
snd_hda_codec_realtek 118784 0
snd_hda_codec_generic 81920 1 snd_hda_codec_realtek
ledtrig_audio 16384 2 snd_hda_codec_generic,snd_hda_codec_realtek
snd_soc_hdac_hdmi 32768 0
snd_sof_intel_hda_common 73728 1 sof_pci_dev
snd_soc_hdac_hda 24576 1 snd_sof_intel_hda_common
snd_sof_intel_hda 20480 1 snd_sof_intel_hda_common
snd_sof_intel_byt 24576 1 sof_pci_dev
snd_sof_intel_ipc 20480 1 snd_sof_intel_byt
snd_sof 98304 4 snd_sof_intel_hda_common,snd_sof_intel_byt,snd_sof_intel_ipc,sof_pci_dev
snd_sof_xtensa_dsp 16384 1 sof_pci_dev
snd_hda_ext_core 28672 4 snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
snd_soc_acpi_intel_match 32768 2 snd_sof_intel_hda_common,sof_pci_dev
snd_soc_acpi 16384 2 snd_soc_acpi_intel_match,sof_pci_dev
snd_soc_core 237568 5 snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_soc_dmic
snd_compress 24576 1 snd_soc_core
ac97_bus 16384 1 snd_soc_core
snd_pcm_dmaengine 16384 1 snd_soc_core
snd_hda_codec_hdmi 57344 1
snd_hda_intel 53248 2
snd_intel_nhlt 20480 1 snd_hda_intel
snd_hda_codec 131072 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda
snd_hda_core 90112 10 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 102400 10 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_core,snd_hda_core,snd_pcm_dmaengine
snd_timer 36864 2 snd_seq,snd_pcm
snd 86016 17 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
rohit@rohitUb18043LTS:~$
3）我安装了软件更新程序的所有更新，但没有成功。
4）使用 sudo alsa force-reload 不会有任何变化
5）环顾四周，发现了这个线索：Ubuntu 18.04 中声卡显示为虚拟输出。用户表示发现“活动配置文件已关闭”，并链接到此论坛上的解决方案（https://forums.linuxmint.com/viewtopic.php?t=268499）。我按照该链接粘贴了四个命令的输出：
rohit@rohitUb18043LTS:~$ sudo fuser -v /dev/snd/*
[sudo] password for rohit:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gdm 1505 F.... pulseaudio
rohit 1878 F.... pulseaudio
rohit@rohitUb18043LTS:~$ pacmd list-cards
1 card(s) available.
index: 0
name: <alsa_card.pci-0000_01_00.1>
driver: <module-alsa-card.c>
owner module: 7
properties:
alsa.card = "0"
alsa.card_name = "HDA NVidia"
alsa.long_card_name = "HDA NVidia at 0xb4000000 irq 17"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:01:00.1"
sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card0"
device.bus = "pci"
device.vendor.id = "10de"
device.vendor.name = "NVIDIA Corporation"
device.product.id = "0fb9"
device.product.name = "GP107GL High Definition Audio Controller"
device.string = "0"
device.description = "GP107GL High Definition Audio Controller"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
profiles:
output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5400, available: no)
output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 300, available: no)
output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 300, available: no)
off: Off (priority 0, available: unknown)
active profile: <off>
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
rohit@rohitUb18043LTS:~$ pacmd list-sinks
1 sink(s) available.
* index: 0
name: <auto_null>
driver: <module-null-sink.c>
flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 1000
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
volume steps: 65537
muted: no
current latency: 0,00 ms
max request: 344 KiB
max rewind: 344 KiB
monitor source: 0
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 0,00 ms; range is 0,50 .. 2000,00 ms
module: 15
properties:
device.description = "Dummy Output"
device.class = "abstract"
device.icon_name = "audio-card"
rohit@rohitUb18043LTS:~$ pacmd list-sink-inputs
0 sink input(s) available.
rohit@rohitUb18043LTS:~$
6) 我尝试了建议的命令，但它显示“没有这样的配置文件”。
rohit@rohitUb18043LTS:~$ pacmd set-card-profile alsa_card.pci-0000_01_00.1 output:analog-stereo+input:analog-stereo
No such profile: output:analog-stereo+input:analog-stereo
rohit@rohitUb18043LTS:~$
请帮忙 - 我该怎么办？