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Reel Rookie

Roku TV - HDR not working on HDMI input (Solved)

TV: Hisense 55U6GR5 Roku TV

Input Device: 4k HDR Android Box (H96 Max x3)

The Problem:

The HDR splash notification in the upper right of the screen was not showing, when directly connected to the TV. It previously worked as expected going through my Onkyo TX-SR393 AVR.



In the Roku TV itself, change the HDMI Mode from "Auto" to "Standard".


Detailed Solution:

In the Roku TV:

Settings>TV Inputs> HDMI [1,2,3,etc]> HDMI Mode:

Select: "Standard"


The "auto" HDMI Mode on this TV was failing to properly negotiate and was blocking HDR from working properly. Once the "Standard" mode was selected, HDR was working as expected.



The verbiage about the HDMI Modes does not indicate this TV being HDMI 2.1 capable, even though it is clearly mentioned in the spec sheet and on the box.  Hopefully this will be fixed in the upcoming Roku OS upgrade.

Spec Sheet:


Community Streaming Expert

Re: Roku TV - HDR not working on HDMI input (Solved)


Thanks for posting what worked for you to the Community.  Always appreciated!

Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102

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