Comment 30 for bug 1634449

Same problem here. Using triple screen (laptop + 2 external monitors) on a Lenovo ThinkPad t460s.

Monitor on display port is turning black for 2-5 seconds on cursor movement or focus changes with alt+tab.

OS: Ubuntu 16.10 amd64
Kernel: 4.8.0-26
CPU: Intel Core i7-6600U
GPU: Intel HD Graphics 520 (Skylake GT2)

Totally related to the fact that Intel didn't make available the latest drivers for yakkety. You can't even get them with the updater because it's not mentioned in here:
https://download.01.org/gfx/ilg-config.cfg

There is simply no 16.10 repo:
https://download.01.org/gfx/repos/ubuntu/

Two possible fix I found for now:

- Use the kernel 4.6.7: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6.7/
- Use the drm-intel-nightly kernel 4.9.0-994: http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/
==> there is no amd64 successful build available anymore, last was 201610192310

Drawback: I don't have the linux-image-extra for those kernels so I don't have aufs for docker.

I had no issues whatsoever on Ubuntu 16.04 LTS with kernel 4.4.x