SUMMARY Disregarding the value I have set in `System Settings → Energy Saving → Dim screen` (which is currently set to 8 minutes) the screen always gets dimmed much earlier. I just measured and it is 4 minutes. Workaround: `systemctl --user start plasma-powerdevil`, unfortunately that way you lose control over your brightness settings. So ATM is repeatedly switch stop and start the service as I work which is very annoying. STEPS TO REPRODUCE 1. Go to `System Settings → Energy Saving` 2. On every available tab set `Dim screen` timeout to 8 minutes. 3. Wait for 4 minutes OBSERVED RESULT Screen gets dimmed EXPECTED RESULT Screen has light as usual SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.27.7 KDE Plasma Version: 5.27.7 KDE Frameworks Version: 5.109.0 Qt Version: 5.15.10 ADDITIONAL INFORMATION I'm not sure if it's relevant, but when I restart `plasma-powerdevil`, I get these lines in the log: org.kde.powerdevil: Handle button events action could not check for screen configuration org.kde.powerdevil: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for this hardware"
> Workaround: `systemctl --user start plasma-powerdevil` Sorry, just noticed: it's supposed to be `systemctl --user stop plasma-powerdevil`. Can't edit the report.
I can reproduce the issue. Whatever duration I set for "Dim Screen," the screen is indeed dimmed in half that time.
I think it's a dup of https://bugs.kde.org/show_bug.cgi?id=304696 I sent an MR https://invent.kde.org/plasma/powerdevil/-/merge_requests/213
Oh wow, that's been open for 11 years! Yikes, how embarrassing. Thanks so much for fixing it! *** This bug has been marked as a duplicate of bug 304696 ***