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没有声音，只有虚拟输出 ubuntu 20.04

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没有声音，只有虚拟输出 ubuntu 20.04

我尝试了网上列出的所有解决方案，但都不起作用。当我新安装 Ubuntu 20.04 实例时，我注意到没有声音。我的 Linux 内核版本是 5.4.0-40-generic。重新加载 ALSA 不起作用，重新安装脉冲音频和 ALSA 也不起作用。声音没有静音。我尝试将扬声器插入前后，但没有任何变化。耳机也没有声音。以下是输出lspci：

00:00.0 Host bridge: Intel Corporation 8th Gen Core Processor Host Bridge/DRAM Registers (rev 07)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Desktop)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:14.0 USB controller: Intel Corporation 200 Series/Z370 Chipset Family USB 3.0 xHCI Controller
00:14.2 Signal processing controller: Intel Corporation 200 Series PCH Thermal Subsystem
00:16.0 Communication controller: Intel Corporation 200 Series PCH CSME HECI #1
00:17.0 SATA controller: Intel Corporation 200 Series PCH SATA controller [AHCI mode]
00:1c.0 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #1 (rev f0)
00:1c.3 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #4 (rev f0)
00:1f.0 ISA bridge: Intel Corporation Z370 Chipset LPC/eSPI Controller
00:1f.2 Memory controller: Intel Corporation 200 Series/Z370 Chipset Family Power Management Controller
00:1f.4 SMBus: Intel Corporation 200 Series/Z370 Chipset Family SMBus Controller
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)

输出自inxi -SMA：

System:
  Host: main-home-pc Kernel: 5.4.0-40-generic x86_64 bits: 64 
  Desktop: Gnome 3.36.3 Distro: Ubuntu 20.04 LTS (Focal Fossa) 
Machine:
  Type: Desktop System: Micro-Star product: MS-7B48 v: 1.0 
  serial: <superuser/root required> 
  Mobo: Micro-Star model: Z370-A PRO (MS-7B48) v: 1.0 
  serial: <superuser/root required> UEFI: American Megatrends v: 2.40 
  date: 03/08/2018 
Audio:
  Device-1: Logitech Webcam C250 type: USB driver: snd-usb-audio,uvcvideo 
  Sound Server: ALSA v: k5.4.0-40-generic

注意：Logitech Webcam 是一个麦克风。

当我尝试运行时alsamixer，出现cannot open mixer: No such file or directory错误
，当我运行时alsamixer -c 1，出现此错误： 截屏

任何帮助，将不胜感激。

答案1

没关系。显然，我在 BIOS 中关闭了“HD 音频控制器”。

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