网络设置中没有有线部分(20.04)

网络设置中没有有线部分(20.04)

我的有线互联网连接无法正常工作,我无法访问网络设置的有线部分。我的问题与网络设置中缺少有线选项以及许多其他情况,但我尝试了针对这些情况提出的所有解决方案,但它们对我来说不起作用。

我使用的是没有以太网端口的 Dell XPS-15-9500。因此,我必须使用 Dell DA200 适配器来连接有线连接。这个适配器在很长一段时间内都运行良好。突然间它不再工作了,我甚至在设置中找不到“有线”连接。(无线连接仍在工作。)

一些可能有用的信息:

$ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:ce:34:e6:4e  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        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 23784  bytes 2711203 (2.7 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 23784  bytes 2711203 (2.7 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp0s20f3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 129.104.107.227  netmask 255.255.255.0  broadcast 129.104.107.255
        inet6 fe80::5727:c7c6:79ce:d6f3  prefixlen 64  scopeid 0x20<link>
        ether dc:41:a9:a9:eb:e2  txqueuelen 1000  (Ethernet)
        RX packets 214538  bytes 230570417 (230.5 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 110262  bytes 39170210 (39.1 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

$ ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: wlp0s20f3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DORMANT group default qlen 1000
    link/ether dc:41:a9:a9:eb:e2 brd ff:ff:ff:ff:ff:ff
3: gpd0: <POINTOPOINT,MULTICAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 500
    link/none
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
    link/ether 02:42:ce:34:e6:4e brd ff:ff:ff:ff:ff:ff


$sudo lshw -c net
  *-network                
       description: Wireless interface
       product: Wi-Fi 6 AX201
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       logical name: wlp0s20f3
       version: 00
       serial: dc:41:a9:a9:eb:e2
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.13.0-44-generic firmware=63.c04f3485.0 QuZ-a0-hr-b0-63.u ip=129.104.107.227 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: iomemory:600-5ff irq:16 memory:604b11c000-604b11ffff

我还想找到 MAC 地址,因为网络连接是通过某种白名单管理的,所以我想确保问题不在这里(我无法访问任何其他有线连接来测试这一点。)


问题似乎出在 Dell DA200 适配器上。使用另一个适配器,我成功连接到互联网。我仍然有兴趣了解如何让旧适配器重新工作(如果可能)。或者找到一个明确的测试,确定适配器是否存在硬件问题。(在 Mac 上也检测不到。我开始认为存在硬件问题。这有点奇怪,因为适配器的 USB 部分仍在工作。)

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