Just wanted to report a very annoying issue with Roku 4. The issue happens with Roku for when : roku is connected to 4k tv and display is set to 4k, then roku is connected to 1080p TV. At this point Roku will not autodetect 1080p and will continue outputting 4k, thus the screen stays black and Roku is unusable. The only solution is to connect Roku to 4k TV and set display type to 1080p or reset the Roku. This is very annoying, can this be addressed somehow?
I will +1 this. It is probably more common for developers to be switching the device between outputs, but it must happen to some extent for consumers. The symptom that I see on my monitors is a green and/or blue tinted screen, so I can at least change the display mode.
In the meantime, you could write down a reliable key press order to change the setting back -> Home, Up, etc.