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direct rendering without root

If as a non-root user even thou GLX module is loaded:

user $ cat /var/log/Xorg.0.log | grep -i glx
LoadModule: "glx"

you don't have direct rendering:

user $ glxinfo | grep direct
direct rendering: Yes

But you do have it as a root, you might want to add the user to the correct group:

root $ gpasswd -a [USERNAME] video

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