Intel Wireless AC 9462 not working w/ 18.04 LTS

Solution 1:

I solved it. Here are the commands to enter in the terminal in order. Make sure you either have Ethernet or some external WiFi adapter to access the Internet. I used a USB WiFi Adapter I use for hacking. -

sudo apt update
sudo apt install git build-essential
git clone https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-iwlwifi.git
cd backport-iwlwifi/
make defconfig-iwlwifi-public
sed -i 's/CPTCFG_IWLMVM_VENDOR_CMDS=y/# CPTCFG_IWLMVM_VENDOR_CMDS is not set/' .config
make -j4
sudo make install
sudo modprobe iwlwifi

Solution 2:

There are other options now, backports-iwlwifi-dkms is in Ubuntu repos and if that version isn't new enough, there is this: https://launchpad.net/~canonical-hwe-team/+archive/ubuntu/backport-iwlwifi

The advantage to the dkms package is that you do not have to reinstall the backports after every kernel update.