本文主要讲述如何在Ubuntu上安装无线网卡驱动，笔记本是Dell Inspiron 3420，无线网卡是Broadcom的BCM43142。记录下来以备后用，能帮助别人，那就更好了
工具/原料
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有线网络
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sudo权限
方法/步骤
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查看无线网卡类型，可以得出类型为broadcom的BCM43142xiaohu@xiaohu-linux:~$ lspci -vvv | grep Network07:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
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查找驱动xiaohu@xiaohu-linux:~$ sudo apt-cache search Broadcom | grep Broadcomb43-fwcutter - Utility for extracting Broadcom 43xx firmwarebroadcom-sta-common - Common files for the Broadcom STA Wireless driverbroadcom-sta-source - Source for the Broadcom STA Wireless driverbcmwl-kernel-source - Broadcom 802.11 Linux STA wireless driver source
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安装驱动sudo apt-get install -y b43-fwcutter broadcom-sta-common broadcom-sta-source bcmwl-kernel-source
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此时点击右上角的网络链接标志，可以无线网络。选择合适的无线网络，并成功上网