After stuggling on and off for a week, I have finally managed to get DRI working with Xorg on Gentoo. I was never able to make any headway using the stable version of Xorg, Mesa, and the Intel drivers. I finally succeeded by upgrading to x11-base/xorg-x11-7.4, media-libs/mesa-7.2, and x11-drivers/xf86-video-intel-2.5.1. In order to do this, I …