thinkpad E470 安装ubuntu16 没有显示wifi

我就是我 2022-04-04 20:12 227阅读 0赞

注: 按照下面介绍的方法，装完了网卡驱动，但是wifi连接时好时坏，无意中配置了/etc/network/interfaces文件，居然解决了问题：

root@controller:/etc/network# ifconfig -a
    enp4s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
            ether 54:e1:ad:a2:bc:e5  txqueuelen 1000  (以太网)
            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  (本地环回)
            RX packets 119  bytes 8790 (8.7 KB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 119  bytes 8790 (8.7 KB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    wlp5s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.43.213  netmask 255.255.255.0  broadcast 192.168.43.255
            inet6 240e:82:f080:d6de:461e:7d90:de6d:cd12  prefixlen 64  scopeid 0x0<global>
            inet6 fe80::48b:540a:92e1:8dec  prefixlen 64  scopeid 0x20<link>
            ether 60:14:b3:b8:55:4b  txqueuelen 1000  (以太网)
            RX packets 5281  bytes 3281514 (3.2 MB)
            RX errors 0  dropped 126  overruns 0  frame 0
            TX packets 6430  bytes 957308 (957.3 KB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    
    ##原先的配置 (连接wifi时好时坏)
    root@controller:/etc/network# cat interfaces.back
    # interfaces(5) file used by ifup(8) and ifdown(8)
    auto lo
    iface lo inet loopback
    iface wlp5s0 inet dhcp
    
    ##现在的配置 (正常连接wifi)
    root@controller:/etc/network# cat interfaces
    bridge_ports wlp5s0  # 网卡名称，网桥创建前连接外部的网卡，可通过ifconfig命令查看，有IP地址的就是
    bridge_stp on  # 避免数据链路出现死循环
    bridge_fd 0  # 将转发延迟设置为0

# 方法1： 直接安装ubuntu提供的驱动包 #

\[无线网卡驱动deb包-ubuntu官网提供： [https://packages.ubuntu.com/uk/xenial-updates/amd64/bcmwl-kernel-source/download][https_packages.ubuntu.com_uk_xenial-updates_amd64_bcmwl-kernel-source_download]\]

# 方法2：编译安装第三方的驱动包 #

## 1, 下载驱动包 ##

以太网的r8168的驱动：链接：[https://pan.baidu.com/s/1dGZC70d][https_pan.baidu.com_s_1dGZC70d] 密码：cwsx

## 2，解压zip文件, 修改Makefile文件 ##

root@wang-pc:~/wireless/aa# ls
    rtl8821ce  rtl8821ce.zip
    
    root@wang-pc:~/wireless/aa# cd rtl8821ce
    root@wang-pc:~/wireless/aa/rtl8821ce# ls
    8821ce.ko     8821ce.mod.o  clean  hal          include  Makefile       Module.symvers  platform     runwpa
    8821ce.mod.c  8821ce.o      core   ifcfg-wlan0  Kconfig  modules.order  os_dep          rtl8821c.mk  wlan0dhcp
    
    root@wang-pc:~/wireless/aa/rtl8821ce# pwd
    /root/wireless/aa/rtl8821ce

export 改为实际解压目录  
![在这里插入图片描述][2018121315135233.png]

# 3， 编译，安装 #

make &&  sudo make install
    sudo modprobe -a 8821ce
    reboot

[https_packages.ubuntu.com_uk_xenial-updates_amd64_bcmwl-kernel-source_download]: https://packages.ubuntu.com/uk/xenial-updates/amd64/bcmwl-kernel-source/download
[https_pan.baidu.com_s_1dGZC70d]: https://pan.baidu.com/s/1dGZC70d
[2018121315135233.png]: /images/20220405/92251cb1043e404e9c5388af2c83f56b.png