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有线已连接但互联网无法使用

tag-icon • tag-icon networking drivers 18.04 ethernet
有线已连接但互联网无法使用

编辑-

我忘了说我的笔记本没有内置以太网端口，我使用 TP Link UE300 以太网适配器连接到以太网。该适配器支持 Linux 的即插即用，在 Windows 中运行良好（一个月前在 Ubuntu 中也可以使用），但现在在 Ubuntu 中无法使用。另外，我认为这是一些驱动程序问题（但不确定）。

系统盘

Bus 002 Device 002: ID 2357:0601  
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 13d3:3526 IMC Networks 
Bus 001 Device 002: ID 13d3:5a07 IMC Networks 
Bus 001 Device 004: ID 03f0:0941 Hewlett-Packard 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

在之前问过的类似问题中找不到任何帮助，所以在这里问。我在 Ubuntu 18.04 上工作，与 Windows 10 双启动。我无法通过以太网连接到互联网。Wifi 工作正常。使用 Windows 时，相同的 LAN 连接工作正常。

附上我在类似线程上找到的一些命令的输出-

是否配置

enx503eaa292ae3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::5cb1:ab0:a367:974c  prefixlen 64  scopeid 0x20<link>
        ether 50:3e:aa:29:2a:e3  txqueuelen 1000  (Ethernet)
        RX packets 293234  bytes 27837628 (27.8 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 107  bytes 14754 (14.7 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 9253  bytes 771757 (771.7 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 9253  bytes 771757 (771.7 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

串行通信

00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 08)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1e.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO UART Controller #0 (rev 21)
00:1e.2 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO SPI Controller #0 (rev 21)
00:1f.0 ISA bridge: Intel Corporation Intel(R) 100 Series Chipset Family LPC Controller/eSPI Controller - 9D4E (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter

路线-n

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

\etc\网络管理器\网络管理器.conf

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=false

[device]
wifi.scan-rand-mac-address=no

/etc/网络/接口

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

任何帮助将不胜感激。

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