This is what my terminal currently looks like. Everything was fine under Gnome X11. But I would prefer to use KDE with Wayland. I suspect it’s either KDE or more likely Wayland.
Update System:
It’s always a good practice to ensure your system is up-to-date before updating drivers.
Run the following commands to update your package repositories and upgrade installed packages:
sudo pacman -Syu
Compatibility with KDE and Wayland
KDE with Wayland is still evolving, and compatibility with NVIDIA drivers can sometimes be problematic due to differences in how Wayland handles graphics compared to X11. Here are a few things you can try:
Switch to X11 Session
If you suspect issues with KDE on Wayland, you can switch to an X11 session to see if the issues persist:
Log out of your current session.
Before logging back in, click on the settings (gear) icon next to the “Sign In” button.
Choose “Plasma (Wayland)” or “Plasma (X11)” from the list and then log in.
If you choose Plasma (X11)", you’ll be running KDE on the X11 display server instead of Wayland.