I use the C locale on my computer running Arch Linux specifically for time (i.e. LC_TIME=C) so that I can see 24-hour times in seconds throughout my PC. This extended to the lockscreen until the most recent updates to Plasma/Qt6 components, and now this is no longer visible.
Additionally, I’ve found that this is also broken in my SDDM theme - I have a modified theme that shows the seconds, but it’s constantly stuck on :00 seconds no matter what.
What can I do to get this back?
Here’s the relevant contents of /var/log/pacman.log (listing what updated):
[2026-03-27T06:30:06-0500] [ALPM] upgraded qt6-base (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:06-0500] [ALPM] upgraded attica (6.24.0-1 -> 6.24.0-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded audacity (1:3.7.7-1 -> 1:3.7.7-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded botan (3.11.0-1 -> 3.11.0-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded btop (1.4.6-1 -> 1.4.6-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded cairomm (1.14.5-2 -> 1.14.5-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded chromaprint (1.6.0-2 -> 1.6.0-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded deno (2.7.7-1 -> 2.7.8-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kcoreaddons (6.24.0-2 -> 6.24.0-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kguiaddons (6.24.0-1 -> 6.24.0-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kidletime (6.24.0-1 -> 6.24.0-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-declarative (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded knotifications (6.24.0-2 -> 6.24.0-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kwidgetsaddons (6.24.0-2 -> 6.24.0-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kjobwidgets (6.24.0-2 -> 6.24.0-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kwindowsystem (6.24.0-1 -> 6.24.0-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kstatusnotifieritem (6.24.0-1 -> 6.24.0-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kunitconversion (6.24.0-2 -> 6.24.0-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-svg (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kxmlgui (6.24.0-2 -> 6.24.0-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-shadertools (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-5compat (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-tools (6.10.2-3 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-positioning (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded layer-shell-qt (6.6.3-1 -> 6.6.3-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded libkscreen (6.6.3-1 -> 6.6.3-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded kwin (6.6.3-1 -> 6.6.3-4)
[2026-03-27T06:30:07-0500] [ALPM] upgraded libfyaml (0.9.6-1 -> 0.9.6-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded libxnvctrl (590.48.01-1 -> 595.58.03-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded npm (11.12.0-1 -> 11.12.1-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded nvidia-open (590.48.01-17 -> 595.58.03-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded nvidia-settings (590.48.01-1 -> 595.58.03-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded obs-studio (32.1.0-1 -> 32.1.0-2)
[2026-03-27T06:30:07-0500] [ALPM] upgraded openexr (3.4.7-2 -> 3.4.8-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded perl-clone (0.48-1 -> 0.49-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-multimedia-ffmpeg (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-multimedia (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-location (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-virtualkeyboard (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded qt6-speech (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:07-0500] [ALPM] upgraded plasma-integration (6.6.3-1 -> 6.6.3-3)
[2026-03-27T06:30:07-0500] [ALPM] upgraded shiboken6 (6.10.2-4 -> 6.11.0-3)
[2026-03-27T06:30:08-0500] [ALPM] upgraded pyside6 (6.10.2-4 -> 6.11.0-3)
[2026-03-27T06:30:08-0500] [ALPM] upgraded python-pyqt6 (6.10.2-3 -> 6.10.2-4)
[2026-03-27T06:30:08-0500] [ALPM] upgraded python-sentry_sdk (2.55.0-1 -> 2.56.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-3d (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-charts (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-connectivity (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-datavis3d (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-quicktimeline (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-quick3d (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-graphs (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-imageformats (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-networkauth (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-sensors (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-serialport (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-webchannel (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-webengine (6.10.2-2 -> 6.11.0-2)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-websockets (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:08-0500] [ALPM] upgraded qt6-webview (6.10.2-1 -> 6.11.0-1)
[2026-03-27T06:30:09-0500] [ALPM] upgraded rust (1:1.94.0-3 -> 1:1.94.1-1)