Originally Posted by eastwindtoo
The thing is I am a bit of a perfectionist..... What does this actually mean I have done? Is this file only used to give better performance to my video? Why does my system seem to be working perfectly without this file if it is needed. Am I just using a lesser quality video now?
i915 (e.g. /lib/modules/2.6.18-164.el5/kernel/drivers/char/drm/i915.ko)
is (as drm signifies) responsible for providing DIRECT graphics rendering.
Your X.Org installation will now have to fallback to indirect (i.e., software) rendering of 3D output, thus 3D operation will be slower.
Running glxgears might indicate this. And glxinfo output will list "indirect" rendering I'd assume.