I have a Fire TV Stick 4K plugged into my Optoma UHZ50 HDMI Port (2). I’m running an HDMI cable from the Projector’s HDMI ARC to the Sonos Amp. Everything sounds great, except the volume +/- buttons on the Fire TV Stick Remote control do not work. The mute button does, curiously, but the +/- do not. I’ve tried messing with the Fire TV Stick “Equipment Management” options to no avail.
Is anyone else running a Fire TV Stick with an HDMI-ARC to a Sonos Amp and able to control volume with the remote?
FWIW, I also have an AppleTV plugged into HDMI 3 and it works just fine, I just needed to select the appropriate speakers in the AppleTV Audio menu. I don’t have a similar option in the Fire TV settings.
What’s bugging me is the mute button works, but the volume +/- do not.
Best answer by Corry PView original