On Fri, Feb 13, 2015 at 01:59:48AM +0000, Isaac Dunham wrote:
> mdev is in busybox. I've managed to bring up my system with it, but
> when I tried starting X I couldn't get the keyboard working.

That's because by default X tries to hotplug input devices with evdev. And
evdev requires libudev.
There is a evdev fork that works with libsysdev tho:
https://github.com/idunham/xf86-input-evdev

There's also a git repo documenting life with mdev on a desktop:
https://github.com/slashbeast/mdev-like-a-boss