install 8821ce driver

8821ce.sh

# NOTE: on ubuntu 20.10, first try `sudo apt install rtl8821ce-dkms`-
# you'll need a usb wifi adapter or download the .dpkg and copy over

# new instructions
# fwiw; newer kernels, ~ > 5.4, seem to work out of the box, possibly
git clone https://github.com/tomaspinho/rtl8821ce.git
cd rtl8821ce
make clean && make -j 6 && sudo make install

# reset the driver (if you need to) with this
sudo modprobe -r 8821ce && sudo modprobe -a 8821ce


######
# >8 old instructions below 8<
# From https://unix.stackexchange.com/a/400259

# For me, this worked on ubuntu 17.10 v4.13.0-36.40
https://minhaskamal.github.io/DownGit/#/home?url=https:%2F%2Fgithub.com%2Fendlessm%2Flinux%2Ftree%2F5b2d22dbe97052459c907dae81fa944f51651b45%2Fdrivers%2Fnet%2Fwireless%2Frtl8821ce

# Note that you might want more up to date for 18.04 (that works for me!)
https://minhaskamal.github.io/DownGit/#/home?url=https:%2F%2Fgithub.com%2Fendlessm%2Flinux%2Ftree%2Fa2f2cc483d89216f2a2f71220984d3e58559733f%2Fdrivers%2Fnet%2Fwireless%2Frtl8821ce

cd ~/Downloads
dtrx rtl8821ce.zip
cd rtl8821ce
# find TopDIR in Makefile, replace to be as this
# export TopDIR ?= $ ~/Downloads/rtl8821ce
make -j 6
sudo make install
sudo modprobe -a 8821ce