Let there be light! And fan control. I've written a tutorial showing how to fix screen brightness via Fn keys and fan control issues on Asus eeePC, including GRUB2 bootloader parameter tweaks, the use of sensors and pwmconfig, some other tips and tricks, and more. Have fun. https://www.dedoimedo.com/computers/eeepc-mx-linux-fan-control-brightness.html Cheers, Mrk