After doing some digging into my standby issues with ROKU OS 8.1 I've come up with some specifics I can now report to ROKU, and if anyone else here is still having the issues also feel free to test this for yourself so I can get more feedback from just my own setup.
First off: It's an HDMI related issue preventing the ROKU from sleeping correctly when the TV is turned off.
One of the things I noted when comparing my TV to the monitor when doing testing was the HDMI version used.
The Monitor is 1080p only, meaning HDMI 1.4 the TV is HDMI 2.0 HDCP 2.2
With this in mind I set the ROKU to a 1080p display setting and bingo, it went to sleep and stayed asleep after the power to the TV was turned off.
Next I tried [email protected]
without HDR, and that also seems to be working. My guess is ROKU's bug(s) here are related to HDR (as many have been)
There also seems to be flaky behavior with the screensaver too. Setting the wait time to 1 minute seems to entail normal behavior meaning the unit stays asleep until a button on the remote is pressed. Setting it above 1 minute say 5, or greater keeps it asleep while everything is off, but wakes it up simply by turning on the TV. I just noticed that it could be anything with HDCP 2.2 that triggers the standby bug, as it woke and then went back to sleep.
Either way try some of what I have been doing if you have the same problems.
Either set it to a 1080 display or 4k only display setting when shutting down. When watching content 4k / HDR works fine.
Ideally, ROKU needs to fix these bugs, but as a work around I don't mind setting it to a different display res to sleep at and then use the res I need when watching stuff. I could leave it at 1080 and be happy since i have other HDR compatible devices until the bugs are fixed, personally.l
I'm going to pass this info on to ROKU so hopefully it I've narrowed it down enough to make it easier for them to find.
I'd rather set the display res instead of having the unit never standby correctly.