On 1 Feb., 10:10, "Ulrich Scholz" <d...@thispla.net> wrote: OK, I solved it (sometimes it helps to read the documentation): - http://download.nvidia.com/XFree86/Linux-x86/1.0-8174/README/ 32bit_html/appendix-d.html This feature is supported on GeForce2 or better hardware using depth 24. (I had only depth 16) - nvidia-xconfig --rotate adjusted your X config file Best, Ulrich