Created attachment 155663 [details] Image for Step 4 SUMMARY "Change Background" in System Settings' Login Screen(SDDM) not work properly and truncate /etc/sddm.conf STEPS TO REPRODUCE 1. Open System Settings 2. Navigate to Login Screen(SDDM) 3. Click on "Change Background" Button over SDDM themes 4. The "Change Background" do not fully show up (only two buttons are shown ) See attachment : in the right-buttom part, these two buttons display above other buttons. 5. At the meanwhile the cpu usage become higher 6. Then Press key `Esc` , After about 1s (not very immediately) , The "Change Background" UI appears 7. Then do the normal change background operation. 8. The `/etc/sddm.conf` become empty After click `Apply` Button and a file `/etc/sddm.conf.d/kde_settings.conf` is generated 9. Then Reboot , the sddm became a weird Virtual Keyboard UI (probably caused by the empty /etc/sddm.conf file) . My fix 1. I have to reinstall `sddm` package to restore `/etc/sddm.conf` 2. change background via editing `/usr/share/sddm/themes/<theme name>/theme.conf.user` OBSERVED RESULT 1. Change Background UI not work properly 2. /etc/sddm.conf is truncated. (That's a severe bug) 3. After reboot ,sddm became a weird Virtual Keyboard UI (after some search, i found it may be maliit) EXPECTED RESULT 1. The "Change background" UI appears normally. 1. The background of SDDM change successfully after a reboot. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora 37 (available in About System) KDE Plasma Version: 5.26.5 KDE Frameworks Version: 5.102.0 Qt Version: 5.15.8 ADDITIONAL INFORMATION
The visual glitch should be fixed in 5.27, at least.
(In reply to Nate Graham from comment #1) > The visual glitch should be fixed in 5.27, at least. Unfortunately the bug is not fixed in 5.27.7 (nor even the visual one).