第一次来这里。我已经有将近 4 周没有 WiFi 或以太网了；我使用 USB 网络共享进行互联网连接。我遵循了论坛上发布的几个教程和解决方案，但至今仍无法解决我的问题。我真的很感激一些从头开始的指导，例如诊断、故障排除。
操作系统：Ubuntu 20.04.1 LTS
*-network UNCLAIMED
description: Ethernet controller
product: RTL810xE PCI Express Fast Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
version: 07
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list
configuration: latency=0
resources: ioport:d000(size=256) memory:ef200000-ef200fff memory:e2100000-e2103fff
*-generic DISABLED
description: Wireless interface
product: RTL8821AE 802.11ac PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: ff
serial: f0:03:8c:ac:4a:27
width: 32 bits
clock: 66MHz
capabilities: bus_master vga_palette cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8821ae driverversion=5.4.0-48-generic firmware=N/A latency=255 link=no maxlatency=255 mingnt=255 multicast=yes wireless=IEEE 802.11
resources: irq:130 ioport:c000(size=256) memory:ef100000-ef103fff
*-network
description: Ethernet interface
physical id: 1
bus info: usb@1:2
logical name: usb0
serial: 72:de:96:42:06:a1
capabilities: ethernet physical
configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.241 link=yes multicast=yes
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
我不知道这些初始信息是否足够。TIA！