I have been attempting to build my own xnu kernel (mainly just to see if I can). I'm using the guide found at http://www.opendarwin.org/en/articles/building_xnu/ on my 12 inch powerbook running 10.3.5
Here is the problem... I've finally generated what looks like it should be a working kernel, but when I restart with said kernel the built in keyboard and trackpad support seems to be broken. Additionally when I attempt to log in (using a usb keyboard and mouse) I get an error saying that something is preventing me from logging in and the screen flies back to a textual log in prompt; same error message here which sends me back to the graphical log in, putting me in a loop..
Any advice would be very welcome.