Windowing System in GNOME about settings page still says X11.
I’ve seen people online say that Wayland will be used if supported by the hardware, but I’ve used Hyprland, so I know my hardware has some level of support for Wayland (although my hardware is very old).
Maybe a stupid question, but did you check “Wayland” before starting the session? (bottom left on the screen when you type your password) I have not done anything to install KDE with wayland and I have both options wayland + x11 available at startup. Note that KDE used to suffer from some bugs in Wayland, not sure what is the current status as suggested in:
This should just change the default session kind to start… but in theory you should be able to select whichever version you prefer in sddm the first time you type your password. At least it is what I have in my system and I don’t have a single line mentionning wayland in my system:
$ cat /etc/nixos/configuration.nix | rg sddm -C 2
# Enable the KDE Desktop Environment.
services.xserver.displayManager.sddm.enable = true;
services.xserver.desktopManager.plasma5.enable = true;
if you don’t have anything, maybe try to remove the wayland = true;
Not a stupid question. I had never seen the login screen because I always skip it (I removed that from the example code because I thought it wasn’t relevant). Turns out, I guess Wayland isn’t supported on my hardware. I say this because when I set services.xserver.displayManager.defaultSession = "plasmawayland" it fails to launch any GUI. The same thing occurs when I enable the login screen and select Wayland in the bottom left.