Incase of KDE power management not working properly
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$ sudo /usr/lib/x86_64-linux-gnu/libexec/org_kde_powerdevil
$ plasmapkg2 -i applet-window-title-0.6.0.plasmoid
$ plasmapkg2 -r applet-window-title-0.6.0.plasmoid
$ /usr/sbin/reboot