Bug#507955: Addendum

["Daniel Richard G." <skunk@iSKUNK.ORG>]

The workaround for this bug is to add the following lines to 
/etc/modprobe.d/blacklist:

	blacklist agpgart
	blacklist intel-agp

With that in place, the system boots and operates perfectly, without 
needing any of the other kernel parameters.

Note: I did test with agp=off, and that doesn't help anything. Unless there 
is a syntax for blacklisting kernel modules from the kernel command line, 
this bug presents a situation where you need to boot into some sort of 
"rescue" environment in order to fix the problem.