Comment 96 for bug 257827

Hi, I noticed this issue from bug 959106, thank Alex Wolfson.
We know this issue and this is not only a issue in userpsace but in kernel, so it's not easy to fix it soon.
We need the code ready in userspace(such as gnome-settings-daemon in gnome) and then we will fix the code in kernel.
But the maintainer of the gnome-settings-daemon didn't accept the patch yet, see bug 959106

Anyway, there is an workaround to fix this, just do
   echo 1 | sudo tee /sys/module/video/parameters/brightness_switch_enabled