8.1-RELEASE - fatal trap 12 during install

[Jacob Lambert]

>>  Here's the error I get when I disable ACPI at the boot loader menu:
>
> What error do you get when you don't disable ACPI?

I get about 20 seconds of scrolling errors on the console that finally end with:

-- snip --
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 10
fault virtual address	= 0x18
fault code			= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff80595e68
stack pointer		= 0x28:0xffffffff80cc24e0
frame pointer		= 0x28:0xffffffff80cc2520
code segment		= base 0x0, limit 0xfffff, type 0x1b
				= DPL 0, press 1, long 1, def32 0, gran 1
processor eflags	= resume, IOPL = 0
current process		= 0 (swapper)
trap number		= 12
panic: page fault
c  id = 0
-- snip --