I have been having problems with my Lenovo T61 and Rawhide.
Currently
the system will do all kinds of watchdog resets when I am booting the
3.0 kernels but not with the 2.6.38 kernel. I am trying to figure out
how to best capture and debug them as they tend to scroll off the
screen faster than I can catch anything.
Does serial console (Documentation/serial-console.txt) work over the
modem port of a T61? You'll need a null modem cable and another
machine running minicom.
What about netconsole (Documentation/network/netconsole.txt)?
What about Documentation/sysrq.txt ?
Those are the lowest-level techniques for getting info out of a kernel.
--