https://bugs.freedesktop.org/show_bug.cgi?id=78562
--- Comment #18 from Stuart Hopkins stu@lifeofstu.com --- Can confirm this patch does remove the flicker on my Sony Vaio VPC1P (tested against the latest 4.x kernel from the Ubuntu 17.04 tree). If required I can post the xrandr output from before/after as well.
On my device xrandr now shows the screen as being at 1600x768@59.90 rather than 1600x768@29.97