how to get rid of powerdevil with 5.8

[Reindl Harald]

is there some sane way to override 
"/etc/xdg/autostart/powerdevil.desktop" like "systemctl mask" - looks

like something is overriding my autostart-item or it#s ignored like 
"ssh-add"

frankly keep your fingers from my display and other powersettings

[root@srv-rhsoft:~]$ cat /home/harry/.config/autostart-scripts/display-on.sh
#!/usr/bin/bash

xset -dpms
xset s off
___________________________-

Nov 18 18:45:33 srv-rhsoft dbus-daemon[934]: [system] Successfully 
activated service 'org.kde.powerdevil.backlighthelper'
Nov 18 18:50:31 srv-rhsoft dbus-daemon[934]: [system] Activating service 
name='org.kde.powerdevil.backlighthelper' requested by ':1.1063' 
(uid=500 pid=6139 comm="/usr/libexec/org_kde_powerdevil ") (using 
servicehelper)
Nov 18 18:50:31 srv-rhsoft dbus-daemon[934]: [system] Successfully 
activated service 'org.kde.powerdevil.backlighthelper'
Nov 18 18:53:25 srv-rhsoft dbus-daemon[934]: [system] Activating service 
name='org.kde.powerdevil.backlighthelper' requested by ':1.1063' 
(uid=500 pid=6139 comm="/usr/libexec/org_kde_powerdevil ") (using 
servicehelper)
Nov 18 18:53:25 srv-rhsoft dbus-daemon[934]: [system] Successfully 
activated service 'org.kde.powerdevil.backlighthelper'
Nov 18 18:54:40 srv-rhsoft dbus-daemon[934]: [system] Activating service 
name='org.kde.powerdevil.backlighthelper' requested by ':1.1063' 
(uid=500 pid=6139 comm="/usr/libexec/org_kde_powerdevil ") (using 
servicehelper)
Nov 18 18:54:40 srv-rhsoft dbus-daemon[934]: [system] Successfully 
activated service 'org.kde.powerdevil.backlighthelper'
Nov 18 18:55:55 srv-rhsoft dbus-daemon[934]: [system] Activating service 
name='org.kde.powerdevil.backlighthelper' requested by ':1.1063' 
(uid=500 pid=6139 comm="/usr/libexec/org_kde_powerdevil ") (using 
servicehelper)
Nov 18 18:55:55 srv-rhsoft dbus-daemon[934]: [system] Successfully 
activated service 'org.kde.powerdevil.backlighthelper'
Nov 18 19:15:50 srv-rhsoft dbus-daemon[934]: [system] Activating service 
name='org.kde.powerdevil.backlighthelper' requested by ':1.1063' 
(uid=500 pid=6139 comm="/usr/libexec/org_kde_powerdevil ") (using 
servicehelper)