Pointer to getting X11 DRM working under !root user

[Matt Graham]

From: Mike Storke <storkus at yahoo.com>
> Is there a HOWTO or file out there somewhere [for getting DRI without
> being root]?  I thought I found one once, but it didn't work for me.

What did that HOWTO tell you to do, and how did it fail?

> My machines are older and getting that DRM working would be 
> a huge boost, not to mention freeing up CPU cycles

First, we need the video card's chipset.  That's "lspci | grep VGA" if
you don't know what it is.  The answer to that question will determine
a whole bunch of the subsequent steps.  You also need to have the
following stanza in your /etc/X11/xorg.conf :

Section "DRI"
  Group      "video"
  Mode       0666
EndSection

...and if you're using the evil nVidia modules, you should make sure
that /dev/nvidia0 and /dev/nvidiactl both exist and are both 0666.