I had exact problem because of SELinux. Solved by setting "Allow the use of shared libraries with Text Relocation" for the SELinux (I have that in the Administration/Security Level and Firewall/SELinux: Compartibility). On 4/19/06, Dave Stevens <geek@xxxxxxxxxxxx> wrote: > Does anyone know why this i and what I can do about it? Appeared right after > installing the livna nvidia driver rpm > > [dave@localhost ~]$ glxgears > Xlib: extension "GLX" missing on display ":0.0". > glxgears: Error: couldn't get an RGB, Double-buffered visual.