Here's what I get - no idea what to fix or how - help needed:
[mhr@mhrichter ~]$ glxinfo name of display: :0.0 Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Error: couldn't find RGB GLX visual
visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat ---------------------------------------------------------------------- Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". 0x21 24 tc 1 0 0 c . . 0 0 0 0 0 0 0 0 0 0 0 0 0 None Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". 0x22 24 dc 1 0 0 c . . 0 0 0 0 0 0 0 0 0 0 0 0 0 None
Running an nVidia geFORCE 7100 GS as NVIDIA Generic with an Envision 19" en910e as Generic VESA 1280x1024.
Hope that helps.