A minor update on this, I’ve now got two Vero’s connected to my Marantz AVR, one on the 3.14 kernel, the other 4.9, both otherwise on the March OSMC. Both are intermittently blank-screening on start/stop events. I’ve found that when the screen goes blank, switching the AVR to another input and then back recovers the display. I’m out of permutations to try in terms of posting logs, there are lots in this thread already, but if there is anything further I can do at my end, happy to to consider further diagnostic work (thus far the only guaranteed fix is dropping to the January OSMC).