Name
DRM — Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
Description
Kernel-level support for the Direct Rendering Infrastructure
(DRI) was
introduced in XFree86 4.0. If you say yes here, you need to select
the module that's right for your graphics card from the list.
These modules provide support for synchronization, security, and
DMA transfers. Please see
https://dri.sourceforge.net
for details. You should also select and configure AGP
(/dev/agpgart) support.