Install Cinnamon

sudo apt install cinnamon
sudo apt install cinnamon-desktop-environment lightdm

（这里，lightdm 安装之后好像不需要配置）

登录的时候，可以选一下桌面环境：

  1. Xfce
  2. Cinnamon
  3. Cinnamon with Software Rendering

选第二项。

Remove Xfce

sudo apt remove xfce*
dpkg -l | grep .xfce. 
dpkg -l | grep .xfce. | xargs sudo apt-get remove
sudo dpkg -l | grep .xfce. | xargs sudo apt-get remove

Reference

https://www.ubuntubuzz.com/2019/05/how-to-completely-remove-xfce-desktop-from-mint-xfce-191.html