Am I the only one having an error message when SDDM is being initialized?
The error message is: “Configuration file ‘’/var/lib/sddm/.config/sddm-greeter-qt6rc’’ not writable. Please contact your system administrator.”
Not a very warm welcome. I didn’t have this message at first when KDE6 was released a few days ago. Pretty curious that it comes up suddenly.
EDIT: Found this old thread. It doesn’t explain the difference between now vs last update, but at least it will most likely fix the issue, as indeed, somehow .config directory is owned by root and not sddm for some reasons. Configuration file "/var/lib/sddm/.config/sddm-greeterrc" not writable - #4 by cscs 
EDIT 2: OK so I dunno what the f- I did, but I had a custom theme for SDDM installed somehow, a Windows 9x style theme called Reactionary. I have no clue where it comes from, I guess I was drunk when I did it or whatever. I uninstalled it and I click on “Apply Plasma settings on SDDM” too and it fixed it. Hum whatever.