As of a few days ago my TV started popping up with "Your device is now ready for use" in the middle of watching something. What apparently is happening is that the TV is forgetting the remote configuration for my soundbar. The soundbar continues to work and play the audio from the TV through the soundbar, however the TV switches from "Optical" to "TV Speaker" and when I press up/down on the TV remote volume buttons it adjusts the TV speaker volume not the soundbar.
More frustrating, when I go into settings and switch the sound from "TV Speaker" to "Optical" then when I press up/down on the TV remote volume buttons my soundbar doesn't respond. The only fix is to go into the "Source" settings > "Universal remote" and then "Add a new device". So it's like this setting keeps getting cleared or removed somehow. There is no pattern to when this happens, or a specific behavior that triggers it. We'll simply be in the middle of watching something and out of the blue the screen pops up with "Your device is ready to use". Which ironically is my cue that it's broken again. This happens several times a day.
I've tried unplugging and reseating all the cables, powering everything off and on, updating all available firmware. Any advice would be greatly appreciated.
TV: Samsung QE55Q85R
Soundbar: Samsung HW-H355
Well while this forum was a waste of time for support after roughly a week of dealing with this issue it seems to has resolved on it's own. The only thing I can point to is possibly a firmware upgrade. Either way, it's resolved now should anyone stumble across this post.