我最近在联想 ThinkPad P1 上安装了 Ubuntu 18.04.3 LTS。它现在可以在 Windows 或 Ubuntu 中双启动。我不知道如何获取 WiFi，它在 Windows 上运行良好。
lspci结果：
52:00.0 Network controller: Intel Corporation Device 2723 (rev 1a)
lshw -C network结果：
WARNING: you should run this program as super-user.
*-network UNCLAIMED
description: Network controller
product: Intel Corporation
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:52:00.0
version: 1a
width: 64 bits
clock: 33MHz
capabilities: cap_list
configuration: latency=0
resources: memory:ceb00000-ceb03fff
*-network
description: Ethernet interface
product: Ethernet Connection (7) I219-V
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: enp0s31f6
version: 10
serial: 48:2a:e3:56:2c:86
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.5-4 latency=0 link=no multicast=yes port=twisted pair
resources: irq:149 memory:cf800000-cf81ffff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
在软件和更新中，“附加驱动程序”下显示：“没有可用的附加驱动程序。”
即使在“Ubuntu 软件”下，在“可从 CD-ROM/DVD 安装”下，带有 Ubuntu 18.04'Bionic Beaver' 的 CDROM 也被勾选（插入了安装的 USB）
我将手机连接到笔记本电脑，并通过网络共享上网
根据要求，我得到了更多信息：
########## wireless info START ##########
Report from: 07 Oct 2019 11:36 CEST +0200
Booted last: 07 Oct 2019 00:00 CEST +0200
Script from: 22 Oct 2018 03:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 18.04.3 LTS
Release: 18.04
Codename: bionic
##### kernel ############################
Linux 5.0.0-23-generic #24~18.04.1-Ubuntu SMP Mon Jul 29 16:12:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=1
##### desktop ###########################
Ubuntu
##### lspci #############################
00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (7) I219-V [8086:15bc] (rev 10)
Subsystem: Lenovo Ethernet Connection (7) I219-V [17aa:229f]
Kernel driver in use: e1000e
52:00.0 Network controller [0280]: Intel Corporation Device [8086:2723] (rev 1a)
Subsystem: Intel Corporation Device [8086:0080]
Kernel modules: iwlwifi
##### lsusb #############################
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 06cb:00bd Synaptics, Inc.
Bus 001 Device 002: ID 174f:2435 Syntek
Bus 001 Device 004: ID 8087:0029 Intel Corp.
Bus 001 Device 005: ID 05ac:12a8 Apple, Inc. iPhone5/5C/5S/6
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: tpacpi_bluetooth_sw: Bluetooth
Soft blocked: no
Hard blocked: no
##### secure boot #######################
SecureBoot enabled
##### lsmod #############################
wmi_bmof 16384 0
intel_wmi_thunderbolt 20480 0
mxm_wmi 16384 1 nouveau
wmi 28672 4 intel_wmi_thunderbolt,wmi_bmof,mxm_wmi,nouveau
##### interfaces ########################
[/etc/network/interfaces]
auto lo
iface lo inet loopback
##### 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: enp0s31f6: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
link/ether <MAC 'enp0s31f6' [IF1]> brd <MAC address>
3: enp0s20f0u1c4i2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether <MAC 'enp0s20f0u1c4i2' [IF2]> brd <MAC address>
inet 172.20.10.2/28 brd 172.20.10.15 scope global dynamic noprefixroute enp0s20f0u1c4i2
valid_lft 85188sec preferred_lft 85188sec
inet6 fe80::c2f:b00e:c752:a56/64 scope link noprefixroute
valid_lft forever preferred_lft forever
##### iwconfig ##########################
enp0s31f6 no wireless extensions.
enp0s20f0u1c4i2 no wireless extensions.
lo no wireless extensions.
##### route #############################
default via 172.20.10.1 dev enp0s20f0u1c4i2 proto dhcp metric 100
169.254.0.0/16 dev enp0s20f0u1c4i2 scope link metric 1000
172.20.10.0/28 dev enp0s20f0u1c4i2 proto kernel scope link src 172.20.10.2 metric 100
##### resolv.conf #######################
[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']
nameserver 127.0.0.53
options edns0
##### network managers ##################
Installed:
NetworkManager
Running:
root 903 1 0 11:30 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: enp0s20f0u1c4i2
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Apple Inc.
GENERAL.PRODUCT: iPhone
GENERAL.DRIVER: ipheth
GENERAL.DRIVER-VERSION: --
GENERAL.FIRMWARE-VERSION: --
GENERAL.HWADDR: <MAC 'enp0s20f0u1c4i2' [IF2]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:4.2/net/enp0s20f0u1c4i2
GENERAL.IP-IFACE: enp0s20f0u1c4i2
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: d89e8260-49c1-3863-8c67-afcccd0cbba3
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
WIRED-PROPERTIES.CARRIER: on
IP4.ADDRESS[1]: 172.20.10.2/28
IP4.GATEWAY: 172.20.10.1
IP4.ROUTE[1]: dst = 0.0.0.0/0, nh = 172.20.10.1, mt = 100
IP4.ROUTE[2]: dst = 172.20.10.0/28, 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]: 172.20.10.1
DHCP4.OPTION[1]: requested_host_name = 1
DHCP4.OPTION[2]: requested_domain_search = 1
DHCP4.OPTION[3]: server_name = Maartens-iPhone-XR
DHCP4.OPTION[4]: requested_broadcast_address = 1
DHCP4.OPTION[5]: requested_time_offset = 1
DHCP4.OPTION[6]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[7]: requested_domain_name = 1
DHCP4.OPTION[8]: expiry = 1570526174
DHCP4.OPTION[9]: requested_wpad = 1
DHCP4.OPTION[10]: next_server = 172.20.10.1
DHCP4.OPTION[11]: requested_netbios_scope = 1
DHCP4.OPTION[12]: dhcp_message_type = 5
DHCP4.OPTION[13]: requested_subnet_mask = 1
DHCP4.OPTION[14]: dhcp_lease_time = 85536
DHCP4.OPTION[15]: ip_address = 172.20.10.2
DHCP4.OPTION[16]: routers = 172.20.10.1
DHCP4.OPTION[17]: requested_domain_name_servers = 1
DHCP4.OPTION[18]: subnet_mask = 255.255.255.240
DHCP4.OPTION[19]: requested_static_routes = 1
DHCP4.OPTION[20]: broadcast_address = 172.20.10.15
DHCP4.OPTION[21]: requested_ntp_servers = 1
DHCP4.OPTION[22]: domain_name_servers = 172.20.10.1
DHCP4.OPTION[23]: requested_netbios_name_servers = 1
DHCP4.OPTION[24]: requested_routers = 1
DHCP4.OPTION[25]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[26]: requested_interface_mtu = 1
DHCP4.OPTION[27]: network_number = 172.20.10.0
DHCP4.OPTION[28]: dhcp_server_identifier = 172.20.10.1
IP6.ADDRESS[1]: fe80::c2f:b00e:c752:a56/64
IP6.GATEWAY: --
IP6.ROUTE[1]: dst = ff00::/8, nh = ::, mt = 256, table=255
IP6.ROUTE[2]: dst = fe80::/64, nh = ::, mt = 256
IP6.ROUTE[3]: dst = fe80::/64, nh = ::, mt = 100
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{2}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: d89e8260-49c1-3863-8c67-afcccd0cbba3 | Wired connection 2
GENERAL.DEVICE: enp0s31f6
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Intel Corporation
GENERAL.PRODUCT: Ethernet Connection (7) I219-V
GENERAL.DRIVER: e1000e
GENERAL.DRIVER-VERSION: 3.2.6-k
GENERAL.FIRMWARE-VERSION: 0.5-4
GENERAL.HWADDR: <MAC 'enp0s31f6' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 20 (unavailable)
GENERAL.REASON: 2 (Device is now managed)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6
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
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:wwan
[[/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
wifi.cloned-mac-address=preserve
ethernet.cloned-mac-address=preserve
##### NetworkManager profiles ###########
##### Netplan config ####################
[/etc/netplan/01-network-manager-all.yaml]
network:
version: 2
renderer: NetworkManager
##### iw reg get ########################
nl80211 not found.
##### iwlist channels ###################
enp0s31f6 no frequency information.
enp0s20f0u1c4i2 no frequency information.
lo no frequency information.
##### iwlist scan #######################
enp0s31f6 Interface doesn't support scanning.
enp0s20f0u1c4i2 Interface doesn't support scanning.
lo Interface doesn't support scanning.
##### module infos ######################
##### module parameters #################
##### /etc/modules ######################
##### modprobe options ##################
[/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 i2c_i801
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 #############################
[ 4.670373] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
[ 40.070239] ipheth 1-1:4.2 enp0s20f0u1c4i2: renamed from eth0
[ 41.321642] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s20f0u1c4i2: link becomes ready
########## wireless info END ############
答案1
显然安全启动已启用，这也是为什么chili555 的回答不起作用。我进入 BIOS 并手动关闭安全启动。之后一切都解决了！