sudo ifconfig wlp4s0 up
service network-manager restart
sudo /etc/init.d/network-manager restart
service network-manager restart
sudo apt-get purge bcmwl-kernel-source
sudo apt-get update
sudo apt-get install bcmwl-kernel-source
Turn off the secure boot
Remove bcmwl-kernel-source
sudo apt-get purge bcmwl-kernel-source
Re-install bcmwl-kernel-source and the kernel header:
sudo apt-get install linux-generic bcmwl-kernel-source
Reboot
sudo ifconfig wlp4s0 up
service network-manager restart
sudo /etc/init.d/network-manager restart
service network-manager restart
sudo apt-get purge bcmwl-kernel-source
sudo apt-get update
sudo apt-get install bcmwl-kernel-source
Turn off the secure boot
Remove bcmwl-kernel-source
sudo apt-get purge bcmwl-kernel-source
Re-install bcmwl-kernel-source and the kernel header:
sudo apt-get install linux-generic bcmwl-kernel-source
Reboot
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