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突然出现 wifi 没有找到适配器的问题

tag-icon • tag-icon networking 20.04 wireless ubuntu-drivers
突然出现 wifi 没有找到适配器的问题

这是我的 PC 配置。我检查了所有旧查询和建议，但都没有帮助。请告诉我如何才能恢复 wifi 适配器。

inxi -Fxz

    System:
  Kernel: 5.4.0-100-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 
  Desktop: Gnome 3.36.9 Distro: Ubuntu 20.04.4 LTS (Focal Fossa) 
Machine:
  Type: Laptop System: HP product: HP Notebook v: Type1ProductConfigId 
  serial: <filter> 
  Mobo: HP model: 81ED v: 62.36 serial: <filter> UEFI [Legacy]: Insyde 
  v: F.21 date: 10/27/2016 
Battery:
  ID-1: BAT1 charge: 16.2 Wh condition: 20.5/41.4 Wh (49%) 
  model: Hewlett-Packard PABAS0241231 status: Charging 
CPU:
  Topology: Dual Core model: Intel Core i3-7100U bits: 64 type: MT MCP 
  arch: Amber Lake rev: 9 L2 cache: 3072 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 19200 
  Speed: 1164 MHz min/max: 400/2400 MHz Core speeds (MHz): 1: 1164 2: 1223 
  3: 1280 4: 1149 
Graphics:
  Device-1: Intel HD Graphics 620 vendor: Hewlett-Packard driver: i915 
  v: kernel bus ID: 00:02.0 
  Display: x11 server: X.Org 1.20.13 driver: modesetting 
  unloaded: fbdev,vesa tty: N/A 
  OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 21.2.6 
  direct render: Yes 
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio vendor: Hewlett-Packard 
  driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
  Sound Server: ALSA v: k5.4.0-100-generic 
Network:
  Device-1: Realtek RTL810xE PCI Express Fast Ethernet 
  vendor: Hewlett-Packard driver: r8169 v: kernel port: 3000 bus ID: 01:00.0 
  IF: enp1s0 state: up speed: 100 Mbps duplex: full mac: <filter> 
  IF-ID-1: br-7f45a238a125 state: up speed: N/A duplex: N/A mac: <filter> 
  IF-ID-2: br-a4750d83537e state: up speed: N/A duplex: N/A mac: <filter> 
  IF-ID-3: docker0 state: down mac: <filter> 
  IF-ID-4: ppp0 state: unknown speed: N/A duplex: N/A mac: N/A 
  IF-ID-5: veth38a943f state: up speed: 10000 Mbps duplex: full 
  mac: <filter> 
  IF-ID-6: veth3b69d38 state: up speed: 10000 Mbps duplex: full 
  mac: <filter> 
  IF-ID-7: veth4998626 state: up speed: 10000 Mbps duplex: full 
  mac: <filter> 
  IF-ID-8: veth90366ae state: up speed: 10000 Mbps duplex: full 
  mac: <filter> 
Drives:
  Local Storage: total: 931.51 GiB used: 262.27 GiB (28.2%) 
  ID-1: /dev/sda vendor: Toshiba model: MQ01ABD100 size: 931.51 GiB 
Partition:
  ID-1: / size: 285.42 GiB used: 81.32 GiB (28.5%) fs: ext4 dev: /dev/sda7 
  ID-2: swap-1 size: 3.81 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda6 
Sensors:
  System Temperatures: cpu: 45.0 C mobo: 29.8 C 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 404 Uptime: 8m Memory: 11.61 GiB used: 3.49 GiB (30.0%) 
  Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.17 
  inxi: 3.0.38

我尝试用这个命令

lspci -knn | grep Net -A3

未找到输出

在下面的命令中发现这个输出

lspci -nnk | grep 0200 -A2

01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:8136] (rev 07)
    Subsystem: Hewlett-Packard Company RTL810xE PCI Express Fast Ethernet controller [103c:81ed]
    Kernel driver in use: r8169

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