My brightness keys work fine under KDE 4.13, but not with Plasma Next. The battery monitor says: "No screen of keyboard brightness controls available". Changing it through a terminal works fine. I'm on ArchLinux with the -git packages from AUR. Reproducible: Always
The PowerDevil infrastructure for brightness handling is not yet ready for Plasma Next.
Correction: powerdevil is there. :) I've both display and keyboard brightness support in the battery applet. AnAkkk: Could you try installing powerdevil? If that doesn't solve your problem, or you already have it, please reopen this bugreport.
powerdevil is already installed.
AnAkkk: Have you logged out and back in again after installing powerdevil? I assume it worked just fine in Plasma 4.x? Could you install plasmate, and start plasmaengineexplorer --engine powermanagement Then post a screenshot of what's shown (tree expanded, please), and the console output that plasmaengineexplorer prints. Thanks for helping with debugging this!
Created attachment 86732 [details] plasmaengineexplorer Yes, I've already logged out and back in, and restarted my computer many times since. Everything works fine in Plasma 4.x.
Created attachment 86733 [details] console output
Ok, the Plasma bits seem good here. I'm reassigning this to Solid, as the problems comes from an underlying library.
I can now change the brightness through the battery applet. The keys still don't work though.
And now after updating some of the git packages it stopped working in the battery applet again.
Anyone here? The errors I have now: dbus[549]: [system] Activating service name='org.kde.powerdevil.backlighthelper' (using servicehelper) org.kde.powerdevil.backlighthelper[822]: Helper initialization failed dbus[549]: [system] Activated service 'org.kde.powerdevil.backlighthelper' failed: Launch helper exited with unknown return code 255 This is still on Arch Linux. I've tested on a Kubuntu Live CD and it works fine though. Any ideas?
Fixed by rebuilding all packages to be in /usr rather than /opt/kf5.