18:04:WiFi 连接正常,但以太网 LAN 连接失败

18:04:WiFi 连接正常,但以太网 LAN 连接失败

我刚刚在笔记本电脑上安装了 ubuntu 18.04 lts,但没有局域网,但我有无线网络,对此有什么想法吗?sudo lshw -c 网络结果

network                 
   description: Wireless interface
   product: WiFi Link 5100
   vendor: Intel Corporation
   physical id: 0
   bus info: pci@0000:0e:00.0
   logical name: wlp14s0
   version: 00
   serial: 00:16:ea:75:d3:8e
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
   configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-74-generic firmware=8.83.5.1 build 33692 ip=192.168.1.22 latency=0 link=yes multicast=yes wireless=IEEE 802.11
   resources: irq:25 memory:f2100000-f2101fff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:14:00.0
       logical name: enp20s0
       version: 02
       serial: 00:1e:ec:5b:ee:30
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       resources: irq:19 ioport:4000(size=256) memory:f2010000-f2010fff memory:f2000000-f200ffff memory:80600000-8060ffff

答案1

运行以太网接口的 r8169 驱动程序已知存在缺陷,而且最近它确实存在缺陷。

terminal...

sudo apt-get update# 更新软件数据库

sudo apt-get install r8168-dkms# 用 r8168 驱动程序替换 r8169 驱动程序

reboot# 重启系统

更新#1:

最初无线接入工作正常,这意味着路由器已正确连接到电缆调制解调器。在排除此问题时,他们重新连接了以太网线,但在将电缆重置为原始配置后,后来发现以太网线错误地插入了路由器背面的 WAN 端口。将其重新插入正确的 LAN 端口,将 WAN 端口重新连接到电缆调制解调器,现在一切正常。r8168 驱动程序修复了原来的问题。

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