Ok, Morgan_Hardwood, you were right.
I get the newest Windows-version and the latest Linux-version (from the ppa of Dariusz Duma; i didn’t know about this before). They have not the same version-number, but the image-outputs are exaclty the same now. Thank you very much.
And on monday i will get a colorimeter-device to profile my monitors, so everything will fall into place now 
Peter