Code review comment for lp:~kaihengfeng/unity-settings-daemon/add-brightness-limit-mechanism

I'm tentatively +1 on this. I agree with Martin that this is an "unbreak my system" knob but ultimately the world where I have this knob is better than the one we are in now, where desktops _are_ broken.

I would love to see an user-visible checkbox that controls if backlight turns off at 0% and a system-vendor tunable that actually controls the 0-100% span.