STEPS TO REPRODUCE 1. open system settings > power management 2. click on "Activity settings" section 3. change any setting 4. click "Reset" button on bottom OBSERVED RESULT nothing happens EXPECTED RESULT reset all current changes to previous values SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux (available in About System) KDE Plasma Version: 5.16.1 KDE Frameworks Version: 5.59 Qt Version: 5.12.4
in Plasma 5.22.4 the step 2 is: 2. click on "Activity power settings" section
N.B. the * in the title bar does go away when you click Reset, and it no longer prompts to apply changes. So it is doing something, it just doesn't actually reset the settings shown in the GUI.
(In reply to Jonathan Wakely from comment #2) > N.B. the * in the title bar does go away when you click Reset, and it no > longer prompts to apply changes. So it is doing something, it just doesn't > actually reset the settings shown in the GUI. Can confirm. Operating System: Arch Linux KDE Plasma Version: 5.25.1 KDE Frameworks Version: 5.95.0 Qt Version: 5.15.5 Graphics Platform: Wayland
This is fixed by Jakob Petsovits with https://invent.kde.org/plasma/powerdevil/-/commit/8babe3530c32feb60e982eccd92fe2341091858d in Plasma 6, which re-does the entire UI and doesn't suffer from this issue anymore.