Finally I fixed this problem on Windows 10, now I experience the same problem on Linux mint 18 Cinnamon.
I am using Lenovo z580 Ideapad with Intel HD Graphics 4000.
The problem was completely the same as on Windows 10; when I was using GUI to change brightness nothing happened. I could change brightness using function keys, but they were not working properly; sort of going out of boundaries.
The problem on Windows 10 I fixed from this forum: https://communities.intel.com/thread/81571 Problem was that registry had wrong value.
I went through a lot of forums, also tired:
Code: Select all
Section "Device" Identifier "card0" Driver "intel" Option "Backlight" "intel_backlight" BusID "PCI:0:2:0" EndSection
Please check the solution of the forum, which I mentioned before. I think it is common problem for Intel HD Graphics 4000 with registry. How I can do it in Mint?
Thank You in advance!
And sorry for my English skills.