Lenovo ThinkPad X61

Printout of lspci -nn:

Printout of lspci -kk:

Printout of lsmod (builtin devices, no external devices connected):

Patching Linux kernel to get Atheros AR242x / AR542x Wireless Network Adapter [168c:001c] WIFI LED works
cd /usr/src/linux

wget https://atheros-ar242x-ar542x-wifi-laptop-led-support.googlecode.com/git/ath5kled-patch

patch -p0 < ath5kled-patch

Kernel .config, example
x61-kernel-config