Debian version of panda3d 1.3.0 will only run as root

Debian version of panda3d 1.3.0 will only run as root. I’ve tried this several times and the program fails with “unable to open window” when I log in as the normal user. When I log in as root, the program runs. What is going on here and how do I fix this?

DirectStart: Starting the game.
Warning: DirectNotify: category ‘Interval’ already exists
Known pipe types:
(all display modules loaded.)
Xlib: connection to “:0.0” refused by server
Xlib: No protocol specified

:display:glxdisplay(error): Could not open display “:0.0”.
:11-03-2006 23:18:03 ShowBase(warning): Unable to open ‘onscreen’ window.
Traceback (most recent call last):
File “/usr/share/panda3d/samples/Basic-Tutorials–Lesson-1-Solar-System/”, line 12, in ?
import direct.directbase.DirectStart
File “/usr/share/panda3d/direct/src/directbase/”, line 4, in ?
File “/usr/share/panda3d/direct/src/showbase/”, line 195, in init
File “/usr/share/panda3d/direct/src/showbase/”, line 568, in openDefaultWindow
raise StandardError, ‘Could not open window.’
StandardError: Could not open window.

It must be the permissions setting on your graphics device. I don’t know what advice to give you, other than to ask over at the debian forums. If you get an answer there, would you mind posting it over here so other people who have the same problem can benefit?