SDDM login theme · 2026

yakupemre-sddm

A calm SDDM login theme: glacier lake, frosted panel, password only.

What it does

No username box: the last user is preselected and shown by name, you only type the password.
Your avatar from SDDM’s user model, cropped to a circle, with a plain glyph as fallback.
Three round power buttons, shut down, restart and sleep, with labels on hover.
A frosted side panel over a glacier lake, Inter type and a large Inter Display clock.
English and Turkish configs; background, font, form position, blur and date format can be changed.

Problem: A single-user Plasma machine does not need a username box, a session picker or an on-screen keyboard button on its login screen.
My role: My own theme, built on Keyitdev’s sddm-astronaut-theme: I reworked the login flow and the look.
Solution: The same layout engine with a shorter flow: password only, three power buttons, no session picker. Its sibling yakupemre-lockscreen uses the same background and form, so the screens after boot, after Meta+L and after waking up match.
Result: Open source under GPL-3.0-or-later, for SDDM 0.21 and later with Qt 6; installs with one script in English or Turkish.

A calm SDDM login theme with a glacier lake, a frosted panel and a round avatar. There is no username box, only the password.

The power buttons are minimal. It is built on Qt 6 and comes in English and Turkish.