Issues with Ubuntu 16.04.2 with kernel 4.8

[giuliocoluccia]

I'vre tried your workaround but id did not work. But I may have done something wrong. Here's what I did. I edited the file /usr/share/doc/xserver-xorg-video-intel-hwe-16.04/xorg.conf which looked like this:

Section "Device"
	Identifier "Intel"
	Driver "intel"
#	Option "AccelMethod" "uxa"
EndSection

and I replaced it with your code. But maybe Card0 and the bus address are not correct on my machine, or I've edited the wrong file. Can you help me with that?
Thank you