单位发的 Thinkpad E470C i5-6125U 商务极速版 一块ssd256G 安装ubuntu 18.04 LTS，发现没有wifi驱动，无线网是 Retaltek Semicondutor Co. Ltd Device c821【就是rtl8821ce】，没错就是这个坑比的网卡，linux现在不支持这个型号的网卡，网上找了好久终于解决，在此记录以便日后查阅。
环境说明
- 电脑：Thinkpad E470C i5-6125U 商务极速版
- wifi驱动：https://github.com/outmanzzq/rtl8821ce.git
具体操作过程
第一步：更新阿里云APT源(点对应系统版本后面的“帮助”按钮)
# 备份
sudo cp /etc/apt/sources.list{,.ori}
# ubuntu 18.04 LTS 源
sudo cat > /etc/apt/sources.list <<EOF
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
EOF
#更新源
sudo apt update
第二步：安装依赖包
sudo apt-get install build-essential git -y
第三步：下载并编译wifi驱动源码包
# 创建工作目录
sudo mkdir -p /server/{tools,backup,scripts}
cd /server/tools
# 下载wifi驱动源码包
git clone https://github.com/outmanzzq/rtl8821ce.git
cd rtl8821ce
unzip rtl8821ce.zip
cd rtl8821ce
make
sudo make install
sudo modprobe -a 8821ce
# 重启生效
reboot
参考链接：