Just taken delivery of a new 2nd Gen Fire TV Cube. It's running:
Software Version: Fire OS 184.108.40.206 (PS7212/1296)
Fire TV Home Version: 6220057.1
Connected via a new Certified Premium HDMI cable to a Denon AVR-X1500H
Denon AVR-X1500H connected via Certified Premium HDMI cable to LG OLED65B7A
This 2nd Gen Cube has replaced a 4K Fire TV Stick
Display settings in the Fire TV Cube:
Resolution: Auto (up to 4K Ultra HD)
Match Original Frame Rate: On
Color Depth: Up to 12 bits
Color Format: Auto
Calibrate Display: 1% Scale
Dynamic Range Settings: Adaptive
These settings worked great with the 4K TV Stick, however, the 2nd Gen Cube seems to have issues. Specifically: Upon resuming from sleep, the color saturation settings seemed to be locked in some kind of HDR-like mode. I can replicate the issue by simply pulling the HDMI cable out, and plugging back in. It seems like some kind of HDMI handshake issue. Again, this did not occur with the 4K Fire TV Stick.
(Assuming this image uploads), as you can see from the photo (not amazing quality, but you get the idea), you can see the difference between the same snippet from when the Fire TV has been restarted (Left) and when it's resumed from sleep (right). Definitely a change.
The only way to resolve this, is by switching Dynamic Range Settings from "Adaptive" to "Always HDR" and then back again. Or, perform a restart of the device from settings.
I've replicated the issue with 3 HDMI cables and different HDMI ports on the Denon AVR-X1500H. I haven't tested the issue bypassing the Denon and going straight from Cube to LG, but I will later for completeness.
Is anyone else seeing this? Is it a known issue? Is there a fix?
What's the best way to get support? Amazon Forum, or contact support? I raised a post here: https://www.amazonforum.com/s/questi...uration-issues