I’d been looking for this for a while and finally found the solution.
Here’s the easiest way to change DE on Omarchy:
Step 1. Install another DE (For example):
pacman -S plasma-desktop
Step 2. Open:
/etc/sddm.conf.d/autologin.conf
Comment out these lines:
# [Autologin]
# User=btw
# Session=hyprland-uwsm
#
# [Theme]
# Current=omarchy
After that, you’ll get the login screen on startup, and you can change the DE from the top-left Session menu.
If you want to make the DE permanent, instead of commenting out the file, just change this line to your preferred DE:
Session=hyprland-uwsm
to
Session=plasma-desktop
>
Note: A lot of the functionality won’t work because Omarchy depends on Hyprland for many of its features. But it’s your machine do what every you like.
My reason for switching DEs is that I use a graphics tablet, and some apps don’t work well with Hyprland because of how it handles windows. I temporarily switched to KDE Plasma, where everything works properly.