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0e1f616
(Get the code!)
On my new desktop machine I'm having dual monitor setup. Sometimes one of monitors gets black for a second and then shows image again - this is especially visible on logon screen. Also, when running an OpenGL application, if it starts on one specific monitor, the whole screen flickers quite badly with random rectangles starting at mouse cursor position. If same app starts on another monitor, no flashing occurs. Vulkan demo apps also don't exhibit flashing.
OS: Ubuntu 16.10 64-bit
Kernel: 4.8.0-26-generic
CPU: Intel Core i7 6700K
GPU: HD Graphics 530 (Skylake GT2)
I always edit my /etc/X11/xorg.conf as:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "TearFree" "true"
Option "DRI" "3"
EndSection
By the way, when tried installing Xenial, it wouldn't even work with dual monitor setup, when adding above settings (works perfectly fine on Haswell desktop).