501461 2025-03-13 18:14:14 +0000 Brightness applet tries to access non-existent dbus action "KeyboardBrightnessControl" 2025-04-04 23:31:30 +0000 1 1 4 Plasma plasmashell Brightness and Color widget master Other Linux RESOLVED FIXED NOR minor 1.0 1 cwo.kde plasma-bugs-null natalie_clarius nate https://invent.kde.org/plasma/powerdevil/-/commit/2039c96da97c550f76b782fed2f03a14705a6ca9 6.4.0 0 oldest_to_newest 2407348 0 cwo.kde 2025-03-13 18:14:14 +0000 SUMMARY I don't have a keyboard backlight. On each plasmashell startup, I get a warning as follows (for each Brightness applet I have): org.kde.applets.brightness: D-Bus action "KeyboardBrightnessControl" is not available at service "org.kde.Solid.PowerManagement" This is otherwise harmless; of course I can't control the brightness of something I don't have. But the warning is unnecessary log spam. STEPS TO REPRODUCE 1. Start plasmashell while not having a brightness-controllable keyboard backlight OBSERVED RESULT Warning about D-Bus action not being available EXPECTED RESULT No warning SOFTWARE/OS VERSIONS Operating System: Fedora Linux 41 KDE Plasma Version: 6.3.80 KDE Frameworks Version: 6.13.0 Qt Version: 6.8.2 Kernel Version: 6.13.5-200.fc41.x86_64 (64-bit) Graphics Platform: Wayland Processors: 4 × Intel® Core™ i5-6200U CPU @ 2.30GHz Memory: 16 GiB of RAM (15.5 GiB usable) Graphics Processor: Intel® HD Graphics 520 ADDITIONAL INFORMATION 2413127 1 bug-janitor 2025-04-04 15:25:11 +0000 A possibly relevant merge request was started @ https://invent.kde.org/plasma/powerdevil/-/merge_requests/540 2413157 2 cwo.kde 2025-04-04 16:18:22 +0000 Git commit 2039c96da97c550f76b782fed2f03a14705a6ca9 by Christoph Wolk. Committed on 04/04/2025 at 15:23. Pushed by cwo into branch 'master'. applets/brightness: downgrade severity of action unavailable message If the KeyboardBrightnessControl action is not available, a warning is logged. This seems a bit high, as this is the expected case for many systems. Instead, use Info severity - this still allows users to see the message without also seeing all the debug messages, but removes it in the default case (as the default minimum severity is already set to Warning). M +1 -1 applets/brightness/plugin/keyboardbrightnesscontrol.cpp https://invent.kde.org/plasma/powerdevil/-/commit/2039c96da97c550f76b782fed2f03a14705a6ca9