I always get this error with:
Operating System: Manjaro Linux
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8
Kernel Version: 6.2.12-1-MANJARO (64-bit)
Graphics Platform: X11
[med@manjaro-med ~]$ journalctl --no-pager --grep powerdevil
-- Boot d1e3dc23c17340488a8c40af579053b0 --
Apr 26 18:28:45 manjaro-med systemd[913]: Starting Powerdevil...
Apr 26 18:28:46 manjaro-med dbus-daemon[647]: [system] Activating service name='org.kde.powerdevil.discretegpuhelper' requested by ':1.34' (uid=1005 pid=1079 comm="/usr/lib/org_kde_powerdevil
") (using servicehelper)
Apr 26 18:28:47 manjaro-med dbus-daemon[647]: [system] Successfully activated service 'org.kde.powerdevil.discretegpuhelper'
Apr 26 18:28:47 manjaro-med dbus-daemon[647]: [system] Activating service name='org.kde.powerdevil.chargethresholdhelper' requested by ':1.34' (uid=1005 pid=1079 comm="/usr/lib/org_kde_powerd
evil") (using servicehelper)
Apr 26 18:28:47 manjaro-med dbus-daemon[647]: [system] Successfully activated service 'org.kde.powerdevil.chargethresholdhelper'
Apr 26 18:28:47 manjaro-med dbus-daemon[647]: [system] Activating service name='org.kde.powerdevil.backlighthelper' requested by ':1.34' (uid=1005 pid=1079 comm="/usr/lib/org_kde_powerdevil")
(using servicehelper)
Apr 26 18:28:48 manjaro-med org_kde_powerdevil[1079]: org.kde.powerdevil: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for t
his hardware"
Apr 26 18:28:48 manjaro-med dbus-daemon[647]: [system] Successfully activated service 'org.kde.powerdevil.backlighthelper'
Apr 26 18:28:50 manjaro-med systemd[913]: plasma-powerdevil.service: start operation timed out. Terminating.
Apr 26 18:28:50 manjaro-med systemd[913]: plasma-powerdevil.service: Failed with result 'timeout'.
Apr 26 18:28:50 manjaro-med systemd[913]: Failed to start Powerdevil.
Apr 26 18:28:50 manjaro-med systemd[913]: plasma-powerdevil.service: Scheduled restart job, restart counter is at 1.
Apr 26 18:28:50 manjaro-med systemd[913]: Stopped Powerdevil.
Apr 26 18:28:50 manjaro-med systemd[913]: Starting Powerdevil...
Apr 26 18:28:51 manjaro-med org_kde_powerdevil[1191]: org.kde.powerdevil: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for t
his hardware"
Apr 26 18:28:55 manjaro-med systemd[913]: plasma-powerdevil.service: start operation timed out. Terminating.
Apr 26 18:28:55 manjaro-med systemd[913]: plasma-powerdevil.service: Failed with result 'timeout'.
Apr 26 18:28:55 manjaro-med systemd[913]: Failed to start Powerdevil.
Apr 26 18:28:56 manjaro-med systemd[913]: plasma-powerdevil.service: Scheduled restart job, restart counter is at 2.
Apr 26 18:28:56 manjaro-med systemd[913]: Stopped Powerdevil.
Apr 26 18:28:56 manjaro-med systemd[913]: Starting Powerdevil...
Apr 26 18:28:56 manjaro-med org_kde_powerdevil[1272]: org.kde.powerdevil: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for t
his hardware"
Apr 26 18:28:58 manjaro-med systemd[913]: Started Powerdevil.
Apr 26 18:28:58 manjaro-med org_kde_powerdevil[1272]: org.kde.powerdevil: Handle button events action could not check for screen configuration
Apr 26 18:28:58 manjaro-med dbus-daemon[934]: [session uid=1005 pid=934] Activating via systemd: service name='org.kde.KScreen' unit='plasma-kscreen.service' requested by ':1.48' (uid=1005 pi
d=1272 comm="/usr/lib/org_kde_powerdevil")
Apr 26 18:28:58 manjaro-med org_kde_powerdevil[1272]: org.kde.powerdevil: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for t
his hardware"
Apr 26 18:48:26 manjaro-med dbus-daemon[647]: [system] Activating service name='org.kde.powerdevil.chargethresholdhelper' requested by ':1.118' (uid=1005 pid=2362 comm="/usr/bin/systemsetting
s") (using servicehelper)
Apr 26 18:48:26 manjaro-med dbus-daemon[647]: [system] Successfully activated service 'org.kde.powerdevil.chargethresholdhelper'
Apr 26 18:48:26 manjaro-med systemsettings[2362]: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for this hardware"
Apr 26 18:48:29 manjaro-med systemsettings[2362]: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for this hardware"
Apr 26 18:48:31 manjaro-med systemsettings[2362]: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for this hardware"
Apr 26 18:48:34 manjaro-med systemsettings[2362]: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for this hardware"