Comment 2 for bug 1564156

Jason Gerard DeRose (jderose) wrote :

So there seems to be a curious pattern with this bug (which might provide an important hint): on desktop systems with 970 GTX or 980 GTX cards, this bug always seems to happen when connected to a monitor over DisplayPort, but does *not* seem to happen when connected to a monitor over HDMI.

We'll investigate this more carefully as soon as there's a new Xenial daily build available (with the 4.4.0-18-generic kernel).