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“ip link”中没有“wlan0”接口

tag-icon • tag-icon linux arch-linux wifi ip
“ip link”中没有“wlan0”接口

今天我注意到我的桌面环境没有任何可用的连接。检查ip link后才发现wlan0接口完全丢失。

输出ip link：

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: enp37s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
    link/ether 2c:f0:5d:cb:b0:8d brd ff:ff:ff:ff:ff:ff
4: enp42s0f3u2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000
    link/ether 8a:64:eb:be:69:70 brd ff:ff:ff:ff:ff:ff

现在我使用USB网络共享来访问互联网，我只能使用家里的无线网络。

我的 USB 适配器是 MW150US。进入lsusb -v：

Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x2c4e Mercucys INC
  idProduct          0x0102 
  bcdDevice            0.00
  iManufacturer           1 Realtek
  iProduct                2 802.11n NIC
  iSerial                 3 00E04C0001
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0027
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
            bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0

我已经手动安装了 rtl8192eu 驱动程序，它们似乎已加载。

关于如何解决这个问题有什么想法吗？

输出lshw -c network：

  *-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:25:00.0
       logical name: enp37s0
       version: 15
       serial: 2c:f0:5d:cb:b0:8d
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.12.1-arch1-1 firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:29 ioport:f000(size=256) memory:f7504000-f7504fff memory:f7500000-f7503fff
  *-network
       description: Ethernet interface
       physical id: 1
       bus info: usb@3:2
       logical name: enp42s0f3u2
       serial: 8a:64:eb:be:69:70
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=5.12.1-arch1-1 firmware=RNDIS device ip=192.168.42.57 link=yes multicast=yes

答案1

enp37s0是一个以太网接口。此外，它也enp42s0f3u2被视为以太网接口（USB 网络共享）。

要使用 USB 加密狗使 WiFi 正常工作，您需要安装rtl8192eu 来自 AUR。

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