Green Screen solution by changing resolution to "Auto"

[Networks]

FYI, solved my Green Screen issue by switching the resolution on the new Telus Android box from 4k to Auto. The problem was when the TV/box had been off for a few hours then powered back on, it would be frozen on a green screen. The audio was fine but the only way to get rid of the green screen was to reboot the Telus box. I have read this has to do with the standby mode but Telus claims that wasn't the issue with me and IIRC I had disabled the standby. I'm hoping this might help others as several people have complained of the green screen problem. 

[Rocky3]

Do you have the 21T

Resembles an issue I have when power is lost. Not sure if you turn it off or also lost power. I have power outage. Instead of green screen I get black, and must plug unplug to get it to restart. I also would like to know where this standby switch is located.

[Networks]

Not familiar with 21T but the box was installed a few weeks ago and is the new, small black Android box with "cloud PVR" ie no local storage. There's both a NAH and a trashcan (connected via pre-existing coax).