Hi, is it possible that that XF86Config-4 is not interpreted? I suspect so because the HorizSync and VertRefresh values in the log file are not the same as in the config file. So you could check: Is the path to the config file correct? Is there any other XF86Config file on your system? See man XF86Config. Regards, Joachim -- Joachim Fahnenmüller Lehrer für Mathematik und Physik Herder-Gymnasium Kattowitzer Straße 52 51065 Köln