Hi, The rpms: kmod-nvidia-legacy-71.86.01-16.lvn8 kmod-nvidia-legacy-2.6.23.1-49.fc8-71.86.01-16.lvn8 I changed the driver to nv in xorg.conf. The I ran glxinfo again. The out put was the same as last night: extension GLX missing on display 0. A couple of lines with a bunch of zeros and then a segmentation fault. What's happened?