2.6.28、この機能は嬉しい。

  Panasonic Laptop Extras (PANASONIC_LAPTOP) [N/m/y/?] (NEW) ?

This driver adds support for access to backlight control and hotkeys
on Panasonic Let's Note laptops.

If you have a Panasonic Let's note laptop (such as the R1(N variant),
R2, R3, R5, T2, W2 and Y2 series), say Y.

これでLet’s note R3でパッチ当てなくてもhotkeyやらが使えるようになるよ。