I am trying to run a program on fc6 that uses OpenGL and Freeglut and am receiving the following error message: freeglut (./cube): OpenGL GLX extension not supported by display ':1.0' My machine is rather old and has an ATI Rage-II (?) video card and xorg.conf says it is using the "ati" driver. However, if I point the display to a Windows-2k machine running the same hardware with Cygwin X, the program runs and displays the expected image. What do I need to do to to get it to display on fc6? TIA for solutions or even hints :-)