Even if I should have removed them, I had, it's done, and it works! I want to say that there a package relative to X-org that was installed before, and now it isn't (maybe it help others). The xserver-xorg-video- nv is not installed on my system anymore. Maybe it was the cause of my problem. I'm not programmer, so I just left the info.
-- glxinfo crash on Intrepid Ibex: extension "GLX" missing https://bugs.launchpad.net/bugs/269405 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs