OS：Fedora 25 KDE
系统内核：4.10.16-200.fc25.x86_64 #1
网卡：BCM43142
1、识别自己的网卡型号：
命令：lspci | grep -i broadcom
或者 lspci | grep -i Network
03:00.0 Network controller: Broadcom Limited BCM43142 802.11b/g/n (rev 01)
2、添加源：添加RPM Fusion源 安装需要的包
yum install --nogpgcheckhttp://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-25.noarch.rpm
3、安装
$ yum search kmod-wl
Redirecting to '/usr/bin/dnf search kmod-wl' (see 'man yum2dnf')
Repository updates is listed more than once in the configuration
Repository updates-debuginfo is listed more than once in the configuration
Repository updates-source is listed more than once in the configuration
Repository fedora is listed more than once in the configuration
Repository fedora-debuginfo is listed more than once in the configuration
Repository fedora-source is listed more than once in the configuration
====================================== N/S 匹配：kmod-wl =======================================
kmod-wl.x86_64 : Metapackage which tracks in wl kernel module for newest kernel
akmod-wl.x86_64 : Akmod package for wl kernel module(s)
kmod-wl-4.10.16-200.fc25.x86_64.x86_64 : wl kernel module(s) for 4.10.16-200.fc25.x86_64
$ yum install akmod-wl kmod-wl
sudo dnf install kernel-devel akmod-wl 重新编译内核模块
sudo akmods 加载内核代码
sudo modprobe wl 重启网络管理器
sudo systemctl restart NetworkManager
如果源里也没有，只能自己下载安装，这里可以到http://rpmfind.net去搜索下载，或者：http://pan.baidu.com/s/1eSKEEDc，是rpm包，下下来安装，然后又会报这个akmods包依赖rpmdev-vercmp 和kmodtool，那就安装：
yum install rpmdevtools -y
去http://rpmfind.net搜索kmodtool下载安装，或者：http://pan.baidu.com/s/1jI8vnHs
完成后再安装akmods，这回应该就过了。过了以后就可以运行：
yum install kmod-wl -y
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另外如果还不行的话那还有一个办法，不过比较麻烦，请直接参考：http://elrepo.org/tiki/wl-kmod
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原址：http://blog.csdn.net/lina_acm/article/details/69663508