Comment # 20 on bug 1208069 from Takashi Iwai

Just run "hwinfo > hwinfo.txt" as root or such would be enough.
Ditto for dmesg.  This is the very starting point to see what hardware
components are included.

The debug of suspend/resume is often really tough, unfortunately, as it can't
be done remotely and it can't leave useful debug info in many cases (because
the device itself is suspended when something happens, hence you can't record
it).
If we are lucky, it's a crash and leaves some kernel Oops, etc.