Re: 7667 issues; black screen/ X windows crashing
That's odd, because in the bug report I see:
(II) NVIDIA(0): NVIDIA GPU detected as: GeForce Go 6600 GT
and 'Go' means a mobile GPU, which is what is used in a laptop. Which brand of 6600GT are you using? Have you checked to see if they released any VBIOS updates?
Both acpi and apic can be disabled as kernel boot time perameters, there's no need to touch the BIOS: