SUMMARY I have used CachyOS(Arch variant) for a while, all worked perfectly. But after updating to KDE 6.5 using yay, The KDE theme setting will reset to the default Breeze after every log out and log in. I tried to update to KDE 6.5.1 but it didn’t fix it. KDE 6.4.5-4.1 (Last version I'm using before 6.5 update) don't seems to have this problem. STEPS TO REPRODUCE 1. Set up a theme different than default one. In my case, Materia Dark applied to most of the themes, kvantum also used. 2. Log out 3. Log in OBSERVED RESULT All theme settings turn back to the default breeze except wallpaper. EXPECTED RESULT Theme setting preserved after logging out as it is before. SOFTWARE/OS VERSIONS Windows: N/A macOS: N/A (available in the Info Center app, or by running `kinfo` in a terminal window) Linux/KDE Plasma: CachyOS Linux KDE Plasma Version: 6.5.1 KDE Frameworks Version: 6.19.0 Qt Version: 6.10.0 ADDITIONAL INFORMATION All was tested in Wayland session. Another problem that may be related is that I have set a wallpaper for sddm from System settings - Colours & Themes - Login Screen (SDDM), but sddm isn't applying that setting correctly, as it is using the default wallpaper from KDE 6.5 update, instead of my .jpg file.
The sddm wallpaper issue is fixed through reapplying the wallpaper. The main problem persists.
Does this reproduce in a new clean user account on the same computer in which you change the theme in the same way?
(In reply to Nate Graham from comment #2) > Does this reproduce in a new clean user account on the same computer in > which you change the theme in the same way? I created a new standard account via system setting GUI and it don't have the problem. Is this a local config problem?
Yep. Unfortunately I can't speculate about what it might be; you'll have to do some investigation and debugging to figure it out.
Problem solved by renaming `~/.config/kdeglobals` and `~/.config/Kvantum` with .bak and let kde recreate the config. Seems like a inconsistency with kde or Kvantum's config handling in new version.