Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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LynnR1
Level 7

No 4K with new Ultra and old LG TV

Just got my new Ultra and can only get it to display 1080p on my old LG 55UB8200 4kTV. I tried the auto-detect setup and the Roku does think the TV can support 4k, but when it tries to switch, I just get black screen/no signal. Same thing if I try to set the display type through the menu - Roku says TV supports 4k/HDCP2.2/etc. then when I switch to it, nothing. I didn't find anything in the TV settings that would help modify any HDMI settings, so am I stuck using 1080p?

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3 Replies
LynnR1
Level 7

Re: No 4K with new Ultra and old LG TV

Some additional info on the TV...

The LG TV supports the following 4K formats:

4K @ 50/60 Hz Support Format: 
 
Resolution: 3840 x 2160p/4096 x 2160p
Framerate (Hz): 50.00/59.94/60.00
Color Depth /
Chroma Sampling: 8 bit / YCbCr 4:2:0
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makaiguy
Level 21

Re: No 4K with new Ultra and old LG TV

https://www.lg.com/us/tvs/lg-55UB8200-led-tv

Above page says this with regard to HDMI ports:
3(2 Rear, 1 Side) *1 HDMI input supports HDCP 2.2

So it appears only one of the HDMI ports supports HDCP 2.2, but it doesn't say which one.  Have you tried a different HDMI port?

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LynnR1
Level 7

Re: No 4K with new Ultra and old LG TV

On the back of the TV, the one HDCP 2.2 port is labeled and that's the one I am using. After doing a little more googling, it may have something to do with the Roku not supporting the 8-bit color depth?? Anyway, I solved the problem by ordering a new TV. It should be here this afternoon. Not the cheapest option, but it was time for an size upgrade too. Thanks for the reply,

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