As I've browsed around the web, I was surprised to learn that linux kernel had a specific "laptop mode" (See http://www.xs4all.nl/~bsamwel/laptop_mode/ ) . How would I go about enabling this feature on Archlinux?
hmmm this is news to me -
i'd say check this link out
http://www.xs4all.nl/~bsamwel/laptop_mo … index.html
in the link you posted, he does describe exactly what to do in order to enable this.
i'll look into the details and see what it's all about.