How to enable Realtek Lenovo Wifi Card drivers in a 2019 Lenovo Ideapad built in 2019. Lenovo Ideapad needs a specific new WiFi driver called rtl8821ce. This package is only available on the Arch User Repository AUR at the time of writing from a guy named tomaspinho.
If you are doing a fresh Arch install on a new Lenovo ideapad, you will need an ethernet cable or a USB internet dongle or possibly hotspot/tether your mobile phone to get connected because the WiFi is not present on the Arch Live USB at time of writing.
Once you have internet, you will need an AUR manager or to build rtl8821ce from the git. You will also need dkms.
The following tutorial was done after the base install.txt was completed and may not work if done while chroot’ed in arch-chroot.
This installs linux-headers, required to match the kernel package and dkms.