I followed the BLFS instructions.
After starting X I only can move the mouse pointer, so I closed X by using window manager:twm->menu->exit, and got this error message in console:
The XKEXBOARD keymap compiler (xkbcomp) reports:
> Error: Error interpreting include file "pc"
> Abandoing symbols file "default"
several times (I think everytime when pressing a key which isnt working properly)
my xorg.conf file entry:
Option "XkbModel" "pc105"
Option "XkbLayout" "en_US"
Maybe worth mentioning: It's a notebook. (Medion WIM2220)