Is there any chance that is not the full log ? It seems to stop right at the good part -- as the drm module is being initialized... that would either imply the system is hanging hard (didn't sound like it from your description) or the log was not fully written to disk when you copied it.
We have seen problems with some mobos and 4GB or more of RAM - does your memory setup make it easy to go below 4GB ? If not, maybe try the "mem=" boot option to limit memory to maybe 3000K for troubleshooting.
I have started the system without the options "splash silent" to read the entire booting process.
DKMS autobuild fails with error 7, this is with kernel 22.214.171.124-rt that I used for multimedia editing and gaming with ETQW.
If system boots up with generic kernel, the Dkms autobuild works correctly, 2d and 3d is nice, but the game is a bit less responsive than with rt.
Ahh yes, when you try to build the module on the -rt kernel, it tries to access parts of the kernel that are deemed accessible by GPL code only, and since the code isn't licensed under the GPL, it fails. Details to get around it are here: http://64studio.com/node/150#comment-1148