Hello, just a note. Why xdpyinfo returns: screen #0: dimensions: 1680x1050 pixels (426x266 millimeters) and xrandr returns: LVDS connected 1680x1050+0+0 (normal left inverted right x axis y axis) 331mm x 207mm (the xrandr is correct) I tried to use DisplaySize 331 207 but it seems to have no effect. -- Lukáš Hejtmánek