Installing a custom SDDM theme from the KDE Store completely bricks the sddm.conf file and prompts me to a black screen on boot

Help
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1

Recently I’ve installed some SDDM themes for my Arch install using the KDE Store, but whenever I apply them in the SDDM manager the login screen is missing and it prompts me to a black screen with a cursor.

After looking at the sddm.conf file, it appears that it is completely missing, I had to generate a new file using “sddm --example-config”, and it started working again. So far I’ve tried these two themes from the KDE Store:

  • Sugar Dark
  • Darkine

Both prompt me to this dark screen, I have not tried any other theme past these.

2

You’'ll need to find SDDM themes that work in Plasma 6. Most will mention this in the name or description. And even then, I find some do appear to lie about being compatible.

Sugar/Sweet -based themes such as Sugar Dark are old, and definitively don’t work in Plasma 6.
So is Darkine.