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我的 Wifi 适配器去哪儿了（Ubuntu 19.04）？

tag-icon • tag-icon networking drivers wireless 19.04
我的 Wifi 适配器去哪儿了（Ubuntu 19.04）？

今天，我的笔记本电脑的 wifi 突然停止工作。我去检查连接，没有 wifi 图标可供选择。在设置中，它只显示“未找到 Wifi 适配器”。命令lspci返回以下内容：

codyp@codys-inspiron:~$ lspci 00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 08) 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07) 00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 08) 00:13.0 Non-VGA unclassified device: Intel Corporation Sunrise Point-LP Integrated Sensor Hub (rev 21) 00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21) 00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21) 00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21) 00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21) 00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21) 00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1) 00:1f.0 ISA bridge: Intel Corporation Intel(R) 100 Series Chipset Family LPC Controller/eSPI Controller - 9D4E (rev 21) 00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21) 00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21) 00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)

但是，我对 Ubuntu 不熟悉，我不知道我在寻找什么。为什么它会消失呢？现在我可以通过以太网上网。该sudo lshw -C network命令输出以下内容（我假设我还应该看到列出的无线网络，但我没有）：

  *-network                 
   description: Ethernet interface
   physical id: 2
   logical name: enx00000006776a
   serial: 00:00:00:06:77:6a
   size: 100Mbit/s
   capacity: 100Mbit/s
   capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
   configuration: autonegotiation=on broadcast=yes driver=asix driverversion=22-Dec-2011 duplex=full firmware=ASIX AX88772B USB 2.0 Ethernet ip=192.168.86.200 link=yes multicast=yes port=MII speed=100Mbit/s

这是来自ifconfig：

        inet 192.168.86.200  netmask 255.255.255.0  broadcast 192.168.86.255
    inet6 fe80::409:f5be:cd2e:92e3  prefixlen 64  scopeid 0x20<link>
    ether 00:00:00:06:77:6a  txqueuelen 1000  (Ethernet)
    RX packets 6217  bytes 6523352 (6.5 MB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 4303  bytes 604422 (604.4 KB)
    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 1447  bytes 129014 (129.0 KB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 1447  bytes 129014 (129.0 KB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

请告诉我这个问题是否可以解决，我刚买了这台笔记本电脑。有没有办法重新安装驱动程序？提前谢谢！

答案1

如果我让计算机进入睡眠状态并再次唤醒，我的 Wifi 适配器似乎会随机消失。但每次这都能确保修复：

  1. 进入 BIOS 设置
  2. 单击屏幕左侧显示的无线设置
  3. 单击恢复 BIOS 设置
  4. 重启计算机

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