FreeBSD 6.0-BETA2: fatal trap on Acer TravelMate 290

Hi,

tried to install FreeBSD 6.0-BETA2 on my Acer TravelMate 290 laptop (model 
292LCMi if I recall correctly), but it dies with a page fault when loading the 
kernel. I can get to the boot loader prompt, the page fault occurs during 
hardware probe for USB controllers.

I know there's been issues installing 5.x on these laptops, and I have not been 
able to install 5.3 or 5.4 on it. With 6.0-beta2 I tried with "Legacy USB 
support" enabled and disabled in BIOS, and by en/disabling ACPI from the boot 
loader prompt, but to no avail.

Following message appears (I copied this by hand so typos might exist):

Fatal trap 12: page fault while in kernel mode
Fault virtual adress: 0x7dc2 Supervisor read, page not present
Instruction pointer: 0x20:0xc00c9cc5
Stack pointer: 0x28:0xc10209ec
Frame pointer: 0x28:0xc10209ec
Code segment: base 0x0 limit 0xfffff type 0x1b DPL 0 pres 1 def 321 gran 1
Processor eflags: interrupt enabled, resume IOPL=0
Current process: OT(swapper)
Tread pid 0 tid 0
Stopped at 0xc00e9xx5 cmpb %cs: 0x1 (%esi), %bl

db> tr
pid 0 tid 0 0xc091d620
kernbase(x00fc922, c00fe920, c07f4db5, a0b, e9) at 0xc00e9cc5
end(cb9d08c4, c4f6ec8b, 81067540, ffffe5, e67f2400) at 0xc1020a44

  --Ville