The following is a list of operations to be performed but the actual location of the script seems to vary between different installations.
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For instance on my own machine, /usr/share/X11/xorg.conf.d/98-screen-calibration.conf is the location that worked. Othere people have located it successfully in /etc/X11/xorg.conf.d/99-calibration.conf. So a certain amount of adaption is required...