最近更新后，我的 USB wifi 适配器停止工作。内置适配器可以工作，但它与 5ghz 不兼容。不知何故，在我尝试修复 USB wifi 时，我也关闭了内置 wifi。我只能使用手机的 USB 网络共享来访问互联网。在内置 wifi 停止工作之前，我做的最后一件事是删除文件 cfg80211。以下是诊断数据，我希望这些数据能帮助某人帮助我解决内置 wifi 适配器的问题，至少我有这个。
########## wireless info START ##########
Report from: 27 Apr 2022 17:15 CDT -0500
Booted last: 27 Apr 2022 00:00 CDT -0500
Script from: 25 Jan 2020 03:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 20.04.4 LTS
Release: 20.04
Codename: focal
##### kernel ############################
Linux 5.13.0-40-generic #45~20.04.1-Ubuntu SMP Mon Apr 4 09:38:31 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
07:00.0 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:81ef]
Kernel driver in use: r8169
0d:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Hewlett-Packard Company RTL8723BE PCIe Wireless Network Adapter [103c:81c1]
Kernel modules: rtl8723be
##### lsusb #############################
Bus 001 Device 002: ID 8087:8001 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 005: ID 0eef:c04d D-WAV Scientific Co., Ltd eGalaxTouch EXC3000-0367-44.01.00
Bus 002 Device 004: ID 05c8:022a Cheng Uei Precision Industry Co., Ltd (Foxlink) HP Webcam
Bus 002 Device 003: ID 0bda:b008 Realtek Semiconductor Corp. Bluetooth Radio
Bus 002 Device 010: ID 04e8:6863 Samsung Electronics Co., Ltd Galaxy series, misc. (tethering mode)
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
##### secure boot #######################
SecureBoot disabled
##### lsmod #############################
hp_wmi 16384 0
platform_profile 16384 1 hp_wmi
sparse_keymap 16384 1 hp_wmi
wmi_bmof 16384 0
wmi 32768 2 hp_wmi,wmi_bmof
##### interfaces ########################
##### ifconfig ##########################
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback <MAC address> brd <MAC address>
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp7s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
link/ether <MAC 'enp7s0' [IF1]> brd <MAC address>
4: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000
link/ether <MAC 'usb0' [IF2]> brd <MAC address>
inet 192.168.107.86/24 brd 192.168.107.255 scope global dynamic noprefixroute usb0
valid_lft 3591sec preferred_lft 3591sec
inet6 fe80::a45c:12e5:ae4a:1cd5/64 scope link noprefixroute
valid_lft forever preferred_lft forever
##### iwconfig ##########################
lo no wireless extensions.
enp7s0 no wireless extensions.
usb0 no wireless extensions.
##### route #############################
default via 192.168.107.141 dev usb0 proto dhcp metric 100
169.254.0.0/16 dev usb0 scope link metric 1000
192.168.107.0/24 dev usb0 proto kernel scope link src 192.168.107.86 metric 100
##### resolv.conf #######################
[644 root '/etc/resolv.conf']
nameserver 127.0.0.53
##### network managers ##################
Installed:
NetworkManager
Running:
root 863 1 0 17:09 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: usb0
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/Devices/5
GENERAL.VENDOR: Samsung Electronics Co., Ltd
GENERAL.PRODUCT: Galaxy series, misc. (tethering mode)
GENERAL.DRIVER: rndis_host
GENERAL.DRIVER-VERSION: 5.13.0-40-generic
GENERAL.FIRMWARE-VERSION: RNDIS device
GENERAL.HWADDR: <MAC 'usb0' [IF2]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.IP4-CONNECTIVITY: 4 (full)
GENERAL.IP6-CONNECTIVITY: 4 (full)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3:1.0/net/usb0
GENERAL.IP-IFACE: usb0
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: Wired connection 2
GENERAL.CON-UUID: 8fee193d-edfc-3f27-a634-d3cecb149e8b
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/2
GENERAL.METERED: yes (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
INTERFACE-FLAGS.UP: yes
INTERFACE-FLAGS.LOWER-UP: yes
INTERFACE-FLAGS.CARRIER: yes
WIRED-PROPERTIES.CARRIER: on
IP4.ADDRESS[1]: 192.168.107.86/24
IP4.GATEWAY: 192.168.107.141
IP4.ROUTE[1]: dst = 0.0.0.0/0, nh = 192.168.107.141, mt = 100
IP4.ROUTE[2]: dst = 192.168.107.0/24, nh = 0.0.0.0, mt = 100
IP4.ROUTE[3]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 192.168.107.141
DHCP4.OPTION[1]: dhcp_lease_time = 3599
DHCP4.OPTION[2]: domain_name_servers = 192.168.107.141
DHCP4.OPTION[3]: expiry = 1651101339
DHCP4.OPTION[4]: host_name = mrpbell5
DHCP4.OPTION[5]: ip_address = 192.168.107.86
DHCP4.OPTION[6]: next_server = 192.168.107.141
DHCP4.OPTION[7]: requested_broadcast_address = 1
DHCP4.OPTION[8]: requested_domain_name = 1
DHCP4.OPTION[9]: requested_domain_name_servers = 1
DHCP4.OPTION[10]: requested_domain_search = 1
DHCP4.OPTION[11]: requested_host_name = 1
DHCP4.OPTION[12]: requested_interface_mtu = 1
DHCP4.OPTION[13]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[14]: requested_nis_domain = 1
DHCP4.OPTION[15]: requested_nis_servers = 1
DHCP4.OPTION[16]: requested_ntp_servers = 1
DHCP4.OPTION[17]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[18]: requested_root_path = 1
DHCP4.OPTION[19]: requested_routers = 1
DHCP4.OPTION[20]: requested_static_routes = 1
DHCP4.OPTION[21]: requested_subnet_mask = 1
DHCP4.OPTION[22]: requested_time_offset = 1
DHCP4.OPTION[23]: requested_wpad = 1
DHCP4.OPTION[24]: routers = 192.168.107.141
DHCP4.OPTION[25]: subnet_mask = 255.255.255.0
IP6.ADDRESS[1]: fe80::a45c:12e5:ae4a:1cd5/64
IP6.GATEWAY: --
IP6.ROUTE[1]: dst = fe80::/64, nh = ::, mt = 100
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/24
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 8fee193d-edfc-3f27-a634-d3cecb149e8b | Wired connection 2
GENERAL.DEVICE: <MAC address>
GENERAL.TYPE: bt
GENERAL.NM-TYPE: NMDeviceBt
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/Devices/3
GENERAL.VENDOR: --
GENERAL.PRODUCT: --
GENERAL.DRIVER: bluez
GENERAL.DRIVER-VERSION: --
GENERAL.FIRMWARE-VERSION: --
GENERAL.HWADDR: <MAC address>
GENERAL.MTU: 0
GENERAL.STATE: 30 (disconnected)
GENERAL.REASON: 0 (No reason given)
GENERAL.IP4-CONNECTIVITY: 1 (none)
GENERAL.IP6-CONNECTIVITY: 1 (none)
GENERAL.UDI: /org/bluez/hci0/dev_E0_D0_83_C2_1F_74
GENERAL.IP-IFACE: --
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unknown
CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
INTERFACE-FLAGS.UP: no
INTERFACE-FLAGS.LOWER-UP: no
INTERFACE-FLAGS.CARRIER: no
BLUETOOTH.CAPABILITIES: NAP
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/8
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 81a72a28-8664-411d-b177-c115c6ef2d99 | EDDIE's S10+ Network
GENERAL.DEVICE: enp7s0
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/Devices/2
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL810xE PCI Express Fast Ethernet controller
GENERAL.DRIVER: r8169
GENERAL.DRIVER-VERSION: 5.13.0-40-generic
GENERAL.FIRMWARE-VERSION: --
GENERAL.HWADDR: <MAC 'enp7s0' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 20 (unavailable)
GENERAL.REASON: 2 (Device is now managed)
GENERAL.IP4-CONNECTIVITY: 1 (none)
GENERAL.IP6-CONNECTIVITY: 1 (none)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.2/0000:07:00.0/net/enp7s0
GENERAL.IP-IFACE: --
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unknown
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
INTERFACE-FLAGS.UP: yes
INTERFACE-FLAGS.LOWER-UP: no
INTERFACE-FLAGS.CARRIER: no
WIRED-PROPERTIES.CARRIER: off
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: --
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager config #############
[[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]
[connection]
wifi.powersave = 3
[[/etc/NetworkManager/NetworkManager.conf]]
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
[[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]
[main]
dns=systemd-resolved
[[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]
[keyfile]
unmanaged-devices=*,except:type:wifi,except:type:gsm,except:type:cdma
[[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]
[connectivity]
uri=http://connectivity-check.ubuntu.com/
[[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]
[device-mac-addr-change-wifi]
match-device=driver:rtl8723bs,driver:rtl8189es,driver:r8188eu,driver:8188eu,driver:eagle_sdio,driver:wl
wifi.scan-rand-mac-address=no
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/StacysDadIsReallyReallyRad.nmconnection]] (600 root)
[connection] id=StacysDadIsReallyReallyRad | type=wifi | permissions=
[wifi] mac-address-blacklist= | ssid=StacysDadIsReallyReallyRad
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Wyndris306.nmconnection]] (600 root)
[connection] id=Wyndris306 | type=wifi | permissions=
[wifi] mac-address-blacklist= | ssid=Wyndris306
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/ThereAreFourLights.nmconnection]] (600 root)
[connection] id=ThereAreFourLights | type=wifi | permissions=
[wifi] mac-address-blacklist= | ssid=ThereAreFourLights
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/CenturyLink1689_5G 1.nmconnection]] (600 root)
[connection] id=CenturyLink1689_5G 1 | type=wifi | permissions=
[wifi] mac-address-blacklist= | ssid=CenturyLink1689_5G
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/StacysDadIsReallyReallyRad 1.nmconnection]] (600 root)
[connection] id=StacysDadIsReallyReallyRad 1 | type=wifi | permissions=
[wifi] mac-address-blacklist= | ssid=StacysDadIsReallyReallyRad
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/CenturyLink1689.nmconnection]] (600 root)
[connection] id=CenturyLink1689 | type=wifi | permissions=
[wifi] mac-address-blacklist= | ssid=CenturyLink1689
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/KAI_SU_TEKNON.nmconnection]] (600 root)
[connection] id=KAI_SU_TEKNON | type=wifi | permissions=
[wifi] mac-address-blacklist= | ssid=KAI_SU_TEKNON
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/SHPA-Staff.nmconnection]] (600 root)
[connection] id=SHPA-Staff | type=wifi | permissions=
[wifi] mac-address-blacklist= | ssid=SHPA-Staff
[ipv4] method=auto
[ipv6] method=auto
##### Netplan config ####################
[/etc/netplan/01-network-manager-all.yaml]
network:
version: 2
renderer: NetworkManager
##### iw reg get ########################
nl80211 not found.
##### iwlist channels ###################
lo no frequency information.
enp7s0 no frequency information.
usb0 no frequency information.
##### iwlist scan #######################
lo Interface doesn't support scanning.
enp7s0 Interface doesn't support scanning.
usb0 Interface doesn't support scanning.
##### module infos ######################
##### module parameters #################
##### /etc/modules ######################
##### modprobe options ##################
[/etc/modprobe.d/8821cu.conf]
options 8821cu rtw_drv_log_level=0 rtw_led_ctrl=1 rtw_vht_enable=1 rtw_power_mgnt=1
[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
##### rc.local ##########################
grep: /etc/rc.local: No such file or directory
##### pm-utils ##########################
##### udev rules ########################
##### dmesg #############################
[ 12.257869] r8169 0000:07:00.0 enp7s0: Link is Down
[ 181.778003] rndis_host 2-3:1.0 usb0: register 'rndis_host' at usb-0000:00:14.0-3, RNDIS device, <MAC address>
[ 306.509105] rndis_host 2-3:1.0 usb0: unregister 'rndis_host' usb-0000:00:14.0-3, RNDIS device
[ 352.392867] rndis_host 2-3:1.0 usb0: register 'rndis_host' at usb-0000:00:14.0-3, RNDIS device, <MAC 'usb0' [IF2]>
########## wireless info END ############
答案1
要重新安装内置无线设备的驱动程序及其相关组件，请执行以下操作：
sudo apt update
sudo apt install --reinstall linux-modules-extra-$(uname -r)
重启。