Ubuntu 20.04
我已经尝试了其他类似问题的几个答案。
从 Nouveau 更改为 NVIDIA 驱动程序后，我现在没有任何 WiFi 设置（任务栏中没有图标，网络设置中只有 VPN 设置，没有连接）。
切换回 Nouveau 并不能解决问题。
我的 WiFi 卡是 Intel 6 AX200
输出lshw -C Network（WiFi部分）：
*-network UNCLAIMED
description: Network controller
product: Wi-Fi 6 AX200
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
version: 1a
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix cap_list
configuration: latency=0
resources: memory:fc700000-fc703fff
输出sudo modprobe iwlwifi：
modprobe: ERROR: ../libkmod/libkmod-module.c:838 kmod_module_insert_module() could not find module by name='iwlwifi'
modprobe: ERROR: could not insert 'iwlwifi': Unknown symbol in module, or unknown parameter (see dmesg)
似乎驱动程序没有被拾取（？）虽然我自己手动下载了它以尝试解决这个问题并将其移至/lib/firmware并重新启动。
有任何想法吗？
输出dpkg -l | egrep -v '^ii|rc'：
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
+++-==========================================-=====================================-============-======================================================================================================
输出dpkg -l | grep linux：
ii binutils-x86-64-linux-gnu 2.34-6ubuntu1 amd64 GNU binary utilities, for x86-64-linux-gnu target
ii console-setup-linux 1.194ubuntu3 all Linux specific part of console-setup
ii libselinux1:amd64 3.0-1build2 amd64 SELinux runtime shared libraries
ii libv4l-0:amd64 1.18.0-2build1 amd64 Collection of video4linux support libraries
ii libv4lconvert0:amd64 1.18.0-2build1 amd64 Video4linux frame format conversion library
ii linux-base 4.5ubuntu3.1 all Linux image base package
ii linux-firmware 1.187.2 all Firmware for Linux kernel drivers
ii linux-generic-hwe-20.04 5.4.0.51.54 amd64 Complete Generic Linux kernel and headers
ii linux-headers-5.4.0-42 5.4.0-42.46 all Header files related to Linux kernel version 5.4.0
ii linux-headers-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel headers for version 5.4.0 on 64 bit x86 SMP
ii linux-headers-5.4.0-51 5.4.0-51.56 all Header files related to Linux kernel version 5.4.0
ii linux-headers-5.4.0-51-generic 5.4.0-51.56 amd64 Linux kernel headers for version 5.4.0 on 64 bit x86 SMP
ii linux-headers-generic-hwe-20.04 5.4.0.51.54 amd64 Generic Linux kernel headers
ii linux-image-5.4.0-42-generic 5.4.0-42.46 amd64 Signed kernel image generic
ii linux-image-5.4.0-51-generic 5.4.0-51.56 amd64 Signed kernel image generic
ii linux-image-5.4.0-52-generic 5.4.0-52.57 amd64 Signed kernel image generic
ii linux-image-generic-hwe-20.04 5.4.0.51.54 amd64 Generic Linux kernel image
ii linux-libc-dev:amd64 5.4.0-51.56 amd64 Linux Kernel Headers for development
ii linux-modules-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
ii linux-modules-5.4.0-51-generic 5.4.0-51.56 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
ii linux-modules-5.4.0-52-generic 5.4.0-52.57 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
ii linux-modules-extra-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
ii linux-modules-extra-5.4.0-51-generic 5.4.0-51.56 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
ii linux-modules-nvidia-450-5.4.0-52-generic 5.4.0-52.57 amd64 Linux kernel nvidia modules for version 5.4.0-52
ii linux-modules-nvidia-450-generic-hwe-20.04 5.4.0-52.57 amd64 Extra drivers for nvidia-450 for generic-hwe-20.04
ii linux-sound-base 1.0.25+dfsg-0ubuntu5 all base package for ALSA and OSS sound systems
ii pptp-linux 1.10.0-1build1 amd64 Point-to-Point Tunneling Protocol (PPTP) Client
ii python3-selinux 3.0-1build2 amd64 Python3 bindings to SELinux shared libraries
ii syslinux 3:6.04~git20190206.bf6db5b4+dfsg1-2 amd64 collection of bootloaders (DOS FAT and NTFS bootloader)
ii syslinux-common 3:6.04~git20190206.bf6db5b4+dfsg1-2 all collection of bootloaders (common)
ii syslinux-legacy 2:3.63+dfsg-2ubuntu9 amd64 Bootloader for Linux/i386 using MS-DOS floppies
ii util-linux 2.34-0.1ubuntu9 amd64 miscellaneous system utilities
在使用
sudo ubuntu-drivers autoinstall. Ubuntu 正在使用我的国家 ppa 镜像，这些镜像可能已经过时了。我通过以下方式解决了这个问题sudo apt update && sudo apt upgrade -y以再次更新到最新内核您需要
linux-modules-extra-5.4.0-52安装奇怪的是它没有在内核升级时自动安装。可能您中断了升级。