Tambahkan add-apt-repository dengan perintah ini.

apt install software-properties-common

Pasang firmware yang belum terpasang dengan perintah.

apt install linux-firmware-nonfree build-essential dkms
apt install firmware-b43-installer
apt-get install apt-file
apt update
apt-file update
apt-file search --package-only /lib/firmware > missng_firmware.txt
apt install -y $(cat missing_firmware.txt | grep firmware | tr '\n' ' ')
reboot

Mengaktifkan driver Wi-fi.

apt install rfkill
rfkill unblock wifi
rfkill list

Memeriksa apakah kernel sudah mendeteksi driver yang ada.

apt install lshw
lshw -class network
readlink /sys/class/net/<wlan>/device/driver

Jika terdapat pesan Wi-fi disabled by hardware switch maka gunakan perintah ini.

apt install net-tools
ifconfig -a
ifconfig <wlan> up

Referensi

• https://askubuntu.com/questions/62166/siocsifflags-operation-not-possible-due-to-rf-kill
• https://ubuntuforums.org/showthread.php?t=2290251
• https://ubuntuforums.org/showthread.php?t=2219423
• https://askubuntu.com/questions/55868/installing-broadcom-wireless-drivers
• https://askubuntu.com/questions/175104/how-do-i-install-bcm43142-wireless-drivers-for-dell-vostro-3460-3560
• https://unix.stackexchange.com/questions/210607/how-to-detect-find-and-install-a-missing-firmware
• https://unix.stackexchange.com/questions/7817/how-to-find-out-which-wi-fi-driver-is-installed