Comment 104 for bug 1653456

Tested with Kernel 4.12 installed from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12/. Fn+F9 works in enabling/disabling the touchpad (at least I see the feedback animation), however the touchpad isn't actually enabled and still does not respond at all unless I suspend and resume my PC (this time I suspended using the now functional Fn+F1 key).

On a side note, brightness control from the Gnome control center does not work for me and instead I can only control it using xbacklight. With kernel 4.12, the Fn control keys for brightness are now working (visual feedback) but the brightness does not change. Anyone has a solution for this? I'm using 375.66 and I have "RegistryDwords" "EnableBrightnessControl=1" in my xorg.conf under Device (never worked for me in any G7 model, g750, g751 and now g752).