You need to have read/write permissions to /dev/dri/cardX to benefit from 3D hardware acceleration in Xorg X Server. On a Gentoo linux machine, this file has the following permissions set by default :
ls -l /dev/dri/card0 crw-rw---- 1 root video 226, 0 2009-10-14 16:12 /dev/dri/card0 |
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