No Wifi-Adapter found on new Lenovo Yoga C930 with Ubuntu 18.10
The usual fix has been to blacklist the ideapad-laptop module but there is another way to fix
sudo apt install git dkms build-essential
git clone -b 4.18 https://github.com/jeremyb31/ideapad-laptop.git
sudo dkms add ./ideapad-laptop
sudo dkms install ideapad-laptop/1.0
echo "options ideapad_laptop override_has_hw_rfkill_switch=0" | sudo tee /etc/modprobe.d/ideapad_laptop.conf
Check mokutil --sb-state
if it says the Secure Boot is enabled, you will need to disable when you reboot in BIOS settings. Please leave the Secure Boot signing keys alone
Ubuntu 18.04 users that have the 4.15 kernels should use
git clone https://github.com/jeremyb31/ideapad-laptop.git
New code courtesy of user ryuo on spotchat IRC