Comment 13 for bug 1656155

Hi. Installing Ubuntu 16.04, installing INTEL GRAPHICS UPDATE TOOL FOR LINUX* OS V2.0.4 didn't help. Except one.

> echo "options i915 enable_rc6=0" | sudo tee /etc/modprobe.d/i915.conf
> sudo update-initramfs -k `uname -r` -u

This command disable power-saving render C-state 6 for i915 driver. It helped me on Ubuntu 16.10 and 16.04.
Also there are other powersaving possibly harmful for performance and stability parameters. They are:
-enable_fbc
-enable_dc

Also you may look at `semaphores` parameter. To read all i915 parameters:
> modinfo -p i915

This is a very useful link about intel graphic that I found:
https://wiki.archlinux.org/index.php/intel_graphics

@Jeffry R. Fisher: in logs(16.04) I had the same error as you, about missing DMC firmware. I didn't fix it and apparently will not. All this power-saving stuff makes no sense if you almost always work with power supply.

Thank you and good luck.