我在连接以太网端口时遇到问题，在全新安装 ubuntu 20.04.1、18.04 以及最新的 Linux mint 时也存在同样的问题。我使用的是 ThinkPad T460s。
它似乎尝试连接了一秒钟，然后我立即断开连接并显示“电缆已拔出”。有人能帮我吗 :-(？以下是一些输出：
ifconfig:
enp0s31f6: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.1.5 netmask 255.255.255.0 broadcast 192.168.1.255
ether c8:5b:76:41:10:14 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 55 bytes 9572 (9.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16 memory 0xf1200000-f1220000
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 10696 bytes 1093130 (1.0 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10696 bytes 1093130 (1.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
这是sudo lshw -C network:
*-network
description: Ethernet interface
product: Ethernet Connection I219-LM
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: enp0s31f6
version: 21
serial: c8:5b:76:41:10:14
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 autonegotia
tion
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.13-3 latency=0 l
ink=no multicast=yes port=twisted pair
resources: irq:130 memory:f1200000-f121ffff
这是sudo dmidecode -s bios-version
N1CET63W (1.31 )
当我运行时sudo dhclient enp0s31f6，它挂了......