SUMMARY I really like the new additions to sync Plasma settings (font, icon, theme, etc.) with the DM (SDDM in most cases). However I don't like having to do this manually every time and it's a bit weird as GTK settings are updated as well. I'm also worried not everyone is browsing the login manager settings. I would propose to use a checkbox (e.g. Sync settings with SDDM/login manager) instead of the user having to click a button. The Sync button also doesn't give me any response if the synchronized has been completed successfully? STEPS TO REPRODUCE 1. Change Plasma settings 2. Need to lookup login manager settings 3. Hit sync OBSERVED RESULT Manually needed sync EXPECTED RESULT Automatically syncing unless I deselect the checkbox SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
I agree, at least for single-user systems. For multi-user systems, it becomes a different story.
*** Bug 491270 has been marked as a duplicate of this bug. ***
I agree that it's not desirable overall due to the reasons Nate listed in bug 491270.
Migrating my (lightly edited) comment there over to this bug report: There are technical and conceptual issues here. Technical: Lots of settings would need to unexpectedly ask for admin permission when changed, since in the background they would be syncing settings to SDDM and that requires admin permission. Conceptual: would not work with multiple users; whose settings would take precedence? If we turned it off automatically in a multi-user environment, then any previously auto-synced settings would get frozen unexpectedly. I don't think we can, sorry.