I bought a laptop & installed Ubuntu on it.
I thought I would be OK with that autobrightness feature, but this thing makes my screen light dance most of the time.
There's no physical/BIOS switch on this...and also, when I phoned lenovo tech support, (after 5 redirects) they said they can't help me as "I'm not supposed to install Ubuntu on my machine"... -_-;;
Is there any way to disable this? I tried to fiddle with the driver settings but I didn't know what to do.
Found a solution to this: I just blocked it with tinfoil + tape works great now =)