I have been administering linux systems for years now, but usually they are commodity boxes and as a result I rarely have driver problems, short of needing to install some "restricted" or "proprietary" driver package, or manually installing the nvidia binary drivers back in the day.
However, one question to which I have never picked up a straight answer regards common troubleshooting practice. Will lsusb and lspci list device for which a system has no drivers (kernel modules)? I am trying to install a webcam on a SiS-chipset laptop and though I can see a physical webcam, neither lsusb or lspci are showing me that any webcam-like device exists. What I want to know is if it would show anything, or if it needs drivers in order to show a device?