Roku Says I Only Have 4k @30Hz

[ClairET]

Hi all,

Just upgraded my Roku to the new Ultra 4K Atmos, HDR, etc. but when connected, it says My TV only supports 4K @30Hz. TV is a Bravia XBR850G and receiver is a Denon AVR-X3500H.

I’ve checked the specs on both and the do support 60Hz. Cables are iVanky 18Gbps and say they support 4K@60Hz also.

I’ve gone direct from Roku to TV and saw no change. Not sure what I’m missing here. Any ideas?

 

[Trebdp83]

Check to see if the Denon's 4K mode is set to Enhanced mode and not Standard mode. Make sure the TV's HDMI ports have HDMI Enhanced format enabled as well.

 

[ClairET]

Both checked out.

 

[everettT]

I'd check the cable just to be sure, non- certified cables may have issues.

 

[Hobbit]

Check to see if the Denon's 4K mode is set to Enhanced mode and not Standard mode. Make sure the TV's HDMI ports have HDMI Enhanced format enabled as well.

This. Been a while, but I remember having to change a setting in my Denon...

 

[afterlife2]

If you have a 4K firestick try it and see what it says. Try a 4K player and play a 4K disc as well.

 

[ClairET]

Found it! I changed cables, bought new 8k@120 certified cables and no change. Tried my 4K Roku stick and not change, so had it nailed down to the TV. As it turns out, there are multiple places to define 4K on the Sony and under Watching TV > Input there were more settings and they were set to standard. Changed them to 4K and things changed for the better. Turns out the old cable was still good too.

Not sure why Sony has two sets of 4K definitions in different spots and not sure how they were changed outside of an update "helping" me.

Thanks all!

 

[BMXTRIX]

Glad you got it fixed. For future reference, the cable will NEVER be the reason it doesn't try 4K/60. Cables are a passive device. They are a point of failure, for sure. So, if 4K/60 doesn't work, then that could be a cabling issue. But, super old 1080p only HDMI cables will still negotiate and attempt to use 4K/60 even if they can't actually carry the bandwidth. This typically results in no image at all, or an image that flickers on/off.

The negotiation that asks for a 4K/60/HDR signal is called EDID, and EDID is a baseline communication between the source and the display. It has been built into HDMI standards since day one. Almost always the display is the issue, as you found out, because the display is what asks for a specific resolution.

I would return what may have been some expensive, and possibly overpriced HDMI cables if you can.