在 Ubuntu 18.04.4 LTS 上找不到 Wifi 适配器;但之前它运行正常

在 Ubuntu 18.04.4 LTS 上找不到 Wifi 适配器;但之前它运行正常

输出

ls /sys/class/net/

如下

bnep0 lo

&

ifconfig输出如下

bnep0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.44.132  netmask 255.255.255.0  broadcast 192.168.44.255
        inet6 fe80::5be9:8396:9ad5:fec4  prefixlen 64  scopeid 0x20<link>
        ether 08:ed:b9:51:18:ea  txqueuelen 1000  (Ethernet)
        RX packets 11716  bytes 11167708 (11.1 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 10320  bytes 1022913 (1.0 MB)
        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 5316  bytes 422264 (422.2 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5316  bytes 422264 (422.2 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

这是否意味着无线网卡根本就不存在?在发生这种情况之前,我已经将笔记本电脑送去清洁/除尘/维修等。

我目前使用手机蓝牙上网,因为我找不到 LAN 电缆。如能提供任何帮助我将不胜感激,谢谢!

稍后编辑:

输出

lspci -knn | grep Net; rfkill list

如下

0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

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