I solved the problem. The following lines were needed too: DisplaySize 367 275 HorizSync 31-80 VertRefresh 56-76 (even though the server automatically detects these values). -- Vincent Lefèvre <vincent@vinc17.org> - Web: <http://www.vinc17.org/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.org/blog/> Work: CR INRIA - computer arithmetic / SPACES project at LORIA