Ubuntu – OpenGL doesn’t seem to work in the Ubuntu

I used to create SFML applications in Windows XP.

When I moved to Ubuntu and set my development environment up, a Segmentation fault error always comes up everytime I compile and run my program. Then I tried to check the OpenGL status by running glxinfo through terminal (as suggested in a website), I got these errors:

root@ubuntu:/# 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".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual or fbconfig

Xlib:  extension "GLX" missing on 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".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
3 GLXFBConfigs:
   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
----------------------------------------------------------------------
Segmentation fault

What should I do?

• Ubuntu 10.04 Lucid Lynx
• ATI Radeon 9550

I also have these packages installed:

• libgl1-mesa
• libgl1-mesa-glx
• libglu1-mesa

Any kind of help would be appreciated 🙂