I decided to try Slitaz on VirtualBox, and it didn't detect my keyboard. The last lines in Xorg.2.log are like this:
[ 25.713] (WW) AllowEmptyInput is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
[ 25.713] (WW) Disabling Mouse0
[ 25.713] (WW) Disabling Keyboard0
[ 25.713]
[ 25.713]
Xorg detected your mouse at device /dev/input/mice.
Please check your config if the mouse is still not
operational, as by default Xorg tries to autodetect
the protocol.
[ 25.713]
Your xorg.conf file is /root/xorg.conf.new
[ 25.713] To test the server, run 'X -config /root/xorg.conf.new'