所以我最近组装了一台新电脑，并保留了我的 SSD/HDD，所以除了安装了 ubuntu 的磁盘驱动器之外，其他一切都变了。以太网连接不工作了（以前在安装了相同 ubuntu 的旧电脑上可以工作），Wi-Fi 仍然通过 USB 适配器工作。以太网连接在安装了 Windows 的另一个驱动器上工作，所以我知道端口工作正常，只是在 Ubuntu 上。我正在寻找一种无需重新安装 ubuntu 即可使以太网工作的方法
我的ifconfig：
r0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet6 fe80::3c60:9eff:fe5b:8d94 prefixlen 64 scopeid 0x20<link>
ether 3e:60:9e:5b:8d:94 txqueuelen 1000 (Ethernet)
RX packets 40313 bytes 5565185 (5.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1515 bytes 472236 (472.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 78701 bytes 6556181 (6.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 78701 bytes 6556181 (6.5 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:71:a9:c1 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlx0024010c2ae6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.41 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::bf4c:1503:726:f000 prefixlen 64 scopeid 0x20<link>
ether 00:24:01:0c:2a:e6 txqueuelen 1000 (Ethernet)
RX packets 73240 bytes 82584023 (82.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 51703 bytes 7315654 (7.3 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
如您所见，ifconfig 中没有 eth0 或 eth1，也许这与问题有关？
我的 /etc/NetworkManager/NetworkManager.conf：
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
“sudo lshw -C 网络“ 输出：
*-network DISABLED
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: eno1
version: 10
serial: 04:d4:c4:47:ce:15
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi 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:126 memory:a5200000-a521ffff
*-network:0
description: Ethernet interface
physical id: 2
logical name: br0
serial: 3e:60:9e:5b:8d:94
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=no multicast=yes
*-network:1
description: Ethernet interface
physical id: 3
logical name: virbr0
serial: 52:54:00:71:a9:c1
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=192.168.122.1 link=no multicast=yes
*-network:2
description: Wireless interface
physical id: 4
bus info: usb@3:13.4
logical name: wlx0024010c2ae6
serial: c6:35:71:76:9b:db
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=rt73usb driverversion=5.0.0-25-generic firmware=1.7 link=no multicast=yes wireless=IEEE 802.11
*-network:3 DISABLED
description: Ethernet interface
physical id: 5
logical name: virbr0-nic
serial: 52:54:00:71:a9:c1
size: 10Mbit/s
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=no multicast=yes port=twisted pair speed=10Mbit/s
“cat /etc/network/interfaces”输出：
# ifupdown has been replaced by netplan(5) on this system. See
# /etc/netplan for current configuration.
# To re-enable ifupdown on this system, you can run:
# sudo apt install ifupdown
“猫/ etc / netplan /.yaml”输出
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
enp0s31f6:
dhcp4: yes
bridges:
br0:
dhcp4: yes
interfaces:
- enp0s31f6
此外，当我点击右上角的网络图标时，它会显示“以太网网络设备未管理”
眼镜：
ASUS Maximus XI Hero (No Wi-Fi)
Intel Core i9 9900k @ 3.6Ghz
MSI GEFORCE RTX 2080 Ti
32GB DDR4 Ram @ 2666MHz
答案1
在您的/etc/netplan/01-netcfg.yaml文件中，请将 enp0s31f6 的两个实例更改为 eno1，即您的以太网的新逻辑名称。然后：
sudo netplan generate
sudo netplan apply
您的以太网现在应该可以正常工作了。如果不行，请尝试重新启动。