Where does SDDM store its configured Plasma Style?

[youda008]

I'm playing with the SDDM settings and trying to understand it.

I've noticed that when i change the Plasma Style in the Kubuntu settings


and then click "Apply Plasma Settings" in the SDDM settings


then it has an effect on how the password line and button looks like


However when i go to /etc/sddm.conf.d/, there is no such setting. The kde_settings.conf only contains the [Theme] Current= (which controls the overall layout and background image), but not the Plasma Style, which controls the line and buttons.

Also the UI says it applies the Scaling DPI, which also isn't set anywhere, and imho it doesn't work at all.

Does anyone understand the magic behind it?

[acheron]

then it has an effect on how the password line and button looks like

That screenshot is the lock screen (kscreenlocker), not sddm. They intentionally look very similar but they are not actually the same thing, and neither are their configs.

[youda008]

That screenshot is the lock screen (kscreenlocker), not sddm. They intentionally look very similar but they are not actually the same thing, and neither are their configs.

I know. Because i can't make a screenshot when i'm not logged in. But what i say applies also to the initial login screen. I can give you a photo from a phone, if that's what you prefer.

[youda008]

Ok. I actually went as far as rummaging through all the recently modified files in my file system, and i discovered a secret folder (parent is rwx------) /var/lib/sddm/.config with config files containing all the settings i was looking for. Namely:

kdeglobals:

[General]
ColorSchemeHash=7d5ec34770cf47e865433a65a555eeeb4191a617

[Icons]
Theme=oxygen

[KDE]
LookAndFeelPackage=org.kde.oxygen
widgetStyle=Oxygen​

plasmarc:

[Theme]
name=org.kde.oxygenKDE4​

Now if only there was a way to set the login page to resolution 1600x900 - the same one as my account uses, so that it does not blink when loading session.