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Ubuntu20.04 有线网络图标消失解决方案

2025/10/14 4:22:52 来源:https://blog.csdn.net/netwalk/article/details/140117154  浏览:    关键词:Ubuntu20.04 有线网络图标消失解决方案

Ubuntu20.04 有线网络图标消失解决方案

问题描述: ubuntu20.04系统提示的software updater有软件包更新,按提示安装更新软件包,重启系统后,ubuntu系统的网络图标消失不见;无法正常上网;检查网口,发现网卡上的灯也不亮;在系统Settings的Network项中,网络配置项也不见了,无法配置网络参数。

原因:这个是Ubuntu Network Manager Bug

解决方案:

sudo lshw -c Network命令测试问题:

$ sudo lshw -c Network*-network:0               description: Wireless interfaceproduct: Cannon Point-LP CNVi [Wireless-AC]vendor: Intel Corporationphysical id: 14.3bus info: pci@0000:00:14.3logical name: wlp0s20f3version: 30serial: 38:00:25:9b:44:2awidth: 64 bitsclock: 33MHzcapabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wirelessconfiguration: broadcast=yes driver=iwlwifi driverversion=5.13.0-51-generic firmware=46.4d093a30.0 9000-pu-b0-jf-b0- ip=192.168.1.104 latency=0 link=yes multicast=yes wireless=IEEE 802.11resources: irq:16 memory:c9738000-c973bfff*-network:1 DISABLEDdescription: Ethernet interfaceproduct: Ethernet Connection (6) I219-Vvendor: Intel Corporationphysical id: 1f.6bus info: pci@0000:00:1f.6logical name: enp0s31f6version: 30serial: 98:fa:9b:12:3e:10capacity: 1Gbit/swidth: 32 bitsclock: 33MHzcapabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiationconfiguration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.13.0-51-generic firmware=0.5-3 latency=0 link=no multicast=yes port=twisted pairresources: irq:167 memory:c9700000-c971ffff*-network DISABLEDdescription: Ethernet interfacephysical id: 2bus info: usb@1:4logical name: enx00e04f0000ceserial: 00:e0:4f:00:00:cesize: 100Mbit/scapacity: 1Gbit/scapabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiationconfiguration: autonegotiation=on broadcast=yes driver=r8152 driverversion=v1.12.12 duplex=full firmware=rtl8153a-4 v2 02/07/20 link=no multicast=yes port=MII speed=100Mbit/s

可见 Ethernet interface 状态为 DISABLE ,可以创建一个缺少的配置文件进而解决这个问题,具体操作如下:

sudo touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf
sudo systemctl restart NetworkManager

之后,继续用lshw命令测试结果如下:

$ sudo lshw -c Network*-network:0 DISABLED      description: Wireless interfaceproduct: Cannon Point-LP CNVi [Wireless-AC]vendor: Intel Corporationphysical id: 14.3bus info: pci@0000:00:14.3logical name: wlp0s20f3version: 30serial: 38:00:25:9b:44:2awidth: 64 bitsclock: 33MHzcapabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wirelessconfiguration: broadcast=yes driver=iwlwifi driverversion=5.13.0-51-generic firmware=46.4d093a30.0 9000-pu-b0-jf-b0- latency=0 link=no multicast=yes wireless=IEEE 802.11resources: irq:16 memory:c9738000-c973bfff*-network:1description: Ethernet interfaceproduct: Ethernet Connection (6) I219-Vvendor: Intel Corporationphysical id: 1f.6bus info: pci@0000:00:1f.6logical name: enp0s31f6version: 30serial: 98:fa:9b:12:3e:10capacity: 1Gbit/swidth: 32 bitsclock: 33MHzcapabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiationconfiguration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.13.0-51-generic firmware=0.5-3 latency=0 link=no multicast=yes port=twisted pairresources: irq:167 memory:c9700000-c971ffff*-networkdescription: Ethernet interfacephysical id: 2bus info: usb@1:4logical name: enx00e04f0000ceserial: 00:e0:4f:00:00:cesize: 100Mbit/scapacity: 1Gbit/scapabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiationconfiguration: autonegotiation=on broadcast=yes driver=r8152 driverversion=v1.12.12 duplex=full firmware=rtl8153a-4 v2 02/07/20 ip=192.168.1.105 link=yes multicast=yes port=MII speed=100Mbit/s

可以看到physical id: 2的网卡已经恢复正常,同时网络图标也恢复正常可见。

以上是我的电脑网络修复的方案

其他方案参考:

在处理这个问题的过程中还看到有其他方案,但可能我电脑的状态不太一样,经过尝试并没有处理掉; 但如果有遇到网络图标消失的情况,也可进行尝试:

1、删除NetworkManager的缓存

$ sudo service NetworkManager stop $ sudo rm /var/lib/NetworkManager/NetworkManager.state $ sudo service NetworkManager start

2、修改配置,把其中的manage=false改为true

sudo vi /etc/NetworkManager/NetworkManager.conf

3、重启NetworkManager

sudo service NetworkManager restart

参考文章:https://blog.csdn.net/weixin_46721287/article/details/126098278

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