I installed Lubuntu 21.04 on my laptop because I usually use LXDE as a lightweight desktop - however, the visual tearing is irritating after using Windows 10, so I installed the kubuntu-desktop package and began using KDE hoping the compositor would use Vsync. Only thing is, it defaults to log in with X11 rather than Wayland (my desktop auto logs in). This means every boot I have to log out and log back in as a Wayland session. How can I set it as default? Wayland is a breath of fresh air. Finally no more tearing!