https://github.com/endlessm/linux/tree/master/drivers/net/wireless/rtl8821ce
Thinkpad E470c,
wireless driver
Realtek 8821CE Wireless LAN 802.11ac PCI-E NIC

1. Edit the Makefile / 编辑Makefile
   Line "export TopDIR ?= ..." to "export TopDIR ?= PATH TO EXTRACTED DIRECTORY".

2. Kernel version / 内核版本,源项目更新最新的源代码或许能支持更新的内核
   启动时Ubuntu高级选项切换内核版本
   sudo uname -r
   4.11-->
   4.13.0-37-generic

3. BIOS Trun off the Secure Boot /BIOS关闭Secure Boot

4. make & Install /编译安装
   make
   sudo make install
   sudo modprobe -a 8821ce