ubuntu broadcom bcm4311,bcm4312等无线网卡问题
sudo apt-get remove --purge bcmwl-kernel-source
sudo apt-get install linux-firmware-nonfree
sudo apt-get install b43-fwcutter
sudo apt-get install b43-fwcutter firmware-b43-installer个人博客网站，记录一些日常遇到的问题。
sudo apt-get remove --purge bcmwl-kernel-source
sudo apt-get install linux-firmware-nonfree
sudo apt-get install b43-fwcutter
sudo apt-get install b43-fwcutter firmware-b43-installer