dmesg | grep dri is empty

I followed all the instructions on the building
page(http://dri.freedesktop.org/wiki/Building), but dmesg | grep dri
is still empty.

glxinfo says:
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

Am I missing something obvious?

If I reinstall Ubuntu Edgy or just go straight to Feisty, will DRI be
activated automatically?

-- 
Iain

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