That's where I am. a partial success I managed to do the update (10.6.7 cambo) + (kernel 10.6) that the boot disk in 32b or 64b.
sysinfo2.jpg
I apply Bridghelper 2 on the second partition, and there can not reboot with the kernel
mbp2011.jpg
I am inspired by the method Michote without using DSDT and PCIRootUID=1 .
i have nvidia card.
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viewtopic.php?f=79&t=16277
may be the solution is the dsdt?
I saw that autopatcher owns a patch for P67-GD55. the gd65 and gd55 have the same BIOS may be we can use the same patch.
may be those who knows the DSDT can we say??.
I await your suggestion