with "LIBGL_DEBUG=verbose glxinfo", I suddenly realize that it was trying to access the file "/usr/X11R6/lib/modules/dri/i915_dri.so" that I do not have. I created a symlink:
sudo mkdir /usr/X11R6/lib/modules sudo ln -s /usr/lib/dri /usr/X11R6/lib/modules/ and then the error messages of glxinfo started to look like Marcelo's: i915 DRI driver expected DDX version 4-4.1.x but got version 1.6.4 libGL warning: 3D driver returned no fbconfigs. libGL error: InitDriver failed libGL error: reverting to (slow) indirect rendering display: :0 screen: 0 direct rendering: No -- 3d acceleration broken in Edgy Knot 1 https://launchpad.net/bugs/54858 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
