This was brought up in a discussion, but I want to formally suggest it as a feature: Add a "screensaver" option to discontinue the video signal rather than playing a slide show, clock, etc. There's a "Black" screensaver available that sends a blank image to the display, but that still keeps the monitor/TV "on". Modern displays will usually turn themselves off – saving electricity and the life of the backlight/display tech – when the video signal stops. They power back on when the signal resumes. Including a video-off option after X minutes would turn the Roku "screensaver" feature into a literal "screen saver".
I want to stress just how annoying this missing feature is becoming. I connected a Roku to one of the ports on my computer monitor, so I could watch something at my desk when someone else is watching the big TV. Now I have to turn that monitor off every time I put my computer to sleep, because the Roku takes it over and keeps it from going to sleep too, like it used to. The fact that people went to the trouble of creating "black" screensavers shows there's an interest in having the monitor go blank instead of doing a slideshow. Why not let us do it "right"?
This is the same issue for me, just turn OFF the HDMI when it sleeps will turn off my monitor which now lights up my room all night wasting power. I have no desire to keep turning off this one monitor each night when the rest of my monitors turn off when I shut down the PC This is madness, come on Roku..
I have a older HDMI splitter attached to the Roku now, one output goes to a monitor PIP area for news feed and the other to a large monitor if I want to watch a show. Since Roku no longer has an audio out I bought a new splitter to give me Optical audio out and this splitter also has a remote with power off button that will now let me kill this **bleep** screen!