On Sat, May 10, 2014 at 03:43:46PM -0400, Henry Hu wrote: > Now I'm using intel-backlight tool from intel-gpu-tools ( > http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/). It works fairly > well. Thank you! It works great. Plus it is the same method of changing backlight, except in userspace. So much contrast, so much battery saved!