https://bugs.freedesktop.org/show_bug.cgi?id=48772
--- Comment #15 from Andy Pillip andy@madspunky.net --- I do have the same issue on Gnome 3, Wayland, F22 with an Intel Graphics Chip.
On 3840 I see the flashes quite often, and the screen sometimes turns off completely.
On 2560 it's less flashes, and on 1920 they are gone completely.
I tried different DP connections, because I thought it might be the docking station that has not enough bandwidth, but also the internal miniDP had that issue.
I cannot provide a Xorg log, since I'm using Wayland.