According to http://richard.stallman.usesthis.com RMS would like to have a real ...

According to http://richard.stallman.usesthis.com RMS would like to have a real laptop with an open BIOS.

Shouldn't a laptop like the Thinkpad X60 or T60 with Coreboot installed fulfill that requirement? They are supported according to the coreboot site.

Are there any other potential problems I'm not thinking of? Possibly a firmware issue with the Intel chipset?

Well, there's probably graphics (?) or something else with proprietary firmware on it...