Comment 85 for bug 1349740

I am showing similar issues with my Acer ES1-511-c665 (https://wheon.com/in/reviews/best-laptop-under-40000/). I found stability with the 3.13 kernel on Linux Mint 17 but am unable to boot the 3.16, 3.19, and 4.0 kernels. I am now writing this on 4.2.1-040201-generic installed from Ubuntu mainline. The 3.13 kernel worked well but I could not change my screen brightness. I do do this now with 4.2.1 but it seems to be inverted so that Fn+[Left Arrow] increases brightness but the on scree Cinnamon indicator shows brightness decreasing and vice versa with Fn+[Right Arrow]. Also, when idle, my screen brightens when it should be dimming.