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我的无线适配器灯亮了，但没有连接无线网络的选项。请帮忙

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我的无线适配器灯亮了，但没有连接无线网络的选项。请帮忙

我对 Linux 还很陌生，为了解决我的问题，我尝试查看了多个答案。以前我的适配器上甚至没有指示灯亮起，但现在运行 Ubuntu 时指示灯亮起，但我仍然只能通过以太网连接。

我使用的无线适配器是Link-com Archer T2U。我在 Ubuntu 16.04 LTS 和 Windows 双启动上运行。

如果您有任何建议我将非常感激。

  • lsusb命令：

    Bus 001 Device 004: ID 0bda:5728 Realtek Semiconductor Corp.
Bus 001 Device 002: ID 148f:761a Ralink Technology, Corp.

  • uname -r：

        4.4.0-22-generic

  • dkms status不返回任何内容。

  • lspci -knn | grep Net -A2（我没有看到我的 USB 加密狗）：

    02:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    Subsystem: Lenovo BCM43142 802.11b/g/n [17aa:0611]
    Kernel driver in use: bcma-pci-bridge

  • lshw -c network：

     *-network
       description: Ethernet interface
       product: QCA8172 Fast Ethernet
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0
       version: 10
       serial: 20:1a:06:fe:ce:bc
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=alx duplex=full ip=10.133.203.211 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:32 memory:f0100000-f013ffff ioport:2000(size=128)
  *-network
       description: Network controller
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=bcma-pci-bridge latency=0
       resources: irq:17 memory:f0000000-f0007fff

  • rfkill list all：

    0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

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