SUMMARY Login and lock screens look almost the same, but they have small differences in the position and size of the UI elements (password field, avatar, date and time, etc.) SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.18 KDE Plasma Version: 5.18.0 KDE Frameworks Version: 5.67.0 Qt Version: 5.13.2
Created attachment 126121 [details] Login screen
Created attachment 126122 [details] Lock screen
90% of the problems are simply different fonts loaded which is unfixable other than syncing your fonts which there is an option for. If you run sddm-greeter --test-mode --theme /usr/share/sddm/themes/breeze/ and you still see differences please list them more specifically
In the preview, I got the difference in the avatar and in the position of the bottom buttons. But after using the “Sync” option in the SDDM settings, the actual look of the lock and login screens is still different (size and position of the password field, bottom buttons, date/time widget, battery indicator and session chooser).
Created attachment 126125 [details] Lock screen
Created attachment 126126 [details] Preview of the login screen
Created attachment 126127 [details] Real view of the login screen
The missing power/session actions issue is tracked by Bug 336369. The lack of a "Desktop Session" chooser in the lock screen is intentional; you can't change the session without logging out. So the only remaining differences appear to be the following: - The power/session actions row is a bit farther down in the login screen than it is in the lock screen - There's no virtual keyboard option on the login screen - The keyboard layout chooser is a combobox on the login screen, but a toggle button on the lock screen - The user avatar is bigger inside its circle on the login screen Those seem reasonable to fix.
+1 for the idea.
Created attachment 126134 [details] Comparison of login and lock screens The left half is the lock screen, and the right half is the login screen.
Here's a more clearly comparison: https://cdn.knightlab.com/libs/juxtapose/latest/embed/index.html?uid=b4541e0c-5301-11ea-b9b8-0edaf8f81e27
You're right, the main problem I had was a different DPI settings. I apologize. So now the only remaining differences are listed in the comment 8.
I found another interesting thing. On the lock screen after some idle time (~10 seconds) all controls are hidden, except for the date and time. But on the login screen after some idle time (~50 seconds) all controls are hidden, including the date and time. Is this a bug or a feature?