Windows TV Video issues

[The Editor Guy]

Hello friends. I'm getting an issue that I just cant sort out myself, I keep flipping between the culprit being the TV, the receiver, the GPU, and the cables. 

 

Essentially I am having connection issues regarding my video output to my LG C1 tv. I use it for some gaming, so it is connected via HDMI 2.1 15 ft cable. Every now and then I lose video, but not audio for between 1 second and permanently (until I switch inputs off, and back). My rig has a RTX 3070 so this shouldnt be hard work for it.

 

Connection goes COMPUTER - HDMI 2.1 CABLE - DENON 3700h RECEIVER 8K INPUT - HDMI 2.1 CABLE - EARC PORT ON LG C1

 

I have tried dropping the frame size from 4K 120 HDR to 2K 60 no HDR with no change. I figured it was the cable, as the longer high end HDMI cables have quality issues - so I replaced it - no luck. - so unless I got a second bad cable, I dont think thats it.

I have tried ditching all my other displays - only having the TV plugged in - and the issue is still present, regardless of frame size and refresh rate-  so I dont believe its a heat or power issue.

I tried different HDMI ports on the GPU, no dice - so unless all the HDMI ports on my GPU are hooped, I dont think its GPU.

I tried to connect the computer directly to the TV (no receiver), no dice - so I don't think its the receiver.

 

I dont have another device capable of pushing 4k 120 HDR, so I cant do tests regarding the TV being sus.

 

 

Because of how the TV always reconnects after changing the input, I wonder if its a tech handshake error, but I have no idea how to confirm that.

 

 

Any thoughts? Suggestions? Shall I pray to the demon lord of PC Troubles?

Thanks guys.

[CodenameAndrew]

Don't think the cable is the problem, HDMI 2.1 is well capable to push 4K 120hz. Might be the TV honestly

[MrMase]

Is the TV running the latest firmware and have you tried enabling / disabling the manufacturers implementation of HDMI -CEC

[The Editor Guy]

Thank you both for the responses. I hope it's not the TV, as it's difficult to return, but I have extended warranty so that'd be fine haha.

 

@MrMasethe TV is on latest firmware - so I tried disabling CEC on my TV. This turned off my ARC for my surround sound- so I went into the receiver settings for CEC or anything of that sort. I found the settings for HDCP on the receiver, and found it was set to Auto. So I set it to conform with the 2.3 spec, and I haven't seen the issue return (as of now). Would this be a possibility as the issue?

 

I will monitor and if the issue does return, I will try disabling CEC again and see if that works. If that doesn't do it, I will come back for more advice. Cheers!

[MrMase]

1 minute ago, The Editor Guy said:

Thank you both for the responses. I hope it's not the TV, as it's difficult to return, but I have extended warranty so that'd be fine haha.

 

@MrMasethe TV is on latest firmware - so I tried disabling CEC on my TV. This turned off my ARC for my surround sound- so I went into the receiver settings for CEC or anything of that sort. I found the settings for HDCP on the receiver, and found it was set to Auto. So I set it to conform with the 2.3 spec, and I haven't seen the issue return (as of now). Would this be a possibility as the issue?

 

I will monitor and if the issue does return, I will try disabling CEC again and see if that works. If that doesn't do it, I will come back for more advice. Cheers!

Could be the issue, the problem stems mainly from every manufacturer implements the so called "standards" differently.

I had a similar issue with my Samsung TV and Sony amp which was eventually fixed with later firmware updates to either devices but was annoying.

 

Either way hope our suggestions have stumbled into the solution.

[kirashi]

9 hours ago, The Editor Guy said:

Thank you both for the responses. I hope it's not the TV, as it's difficult to return, but I have extended warranty so that'd be fine haha.

 

@MrMasethe TV is on latest firmware - so I tried disabling CEC on my TV. This turned off my ARC for my surround sound- so I went into the receiver settings for CEC or anything of that sort. I found the settings for HDCP on the receiver, and found it was set to Auto. So I set it to conform with the 2.3 spec, and I haven't seen the issue return (as of now). Would this be a possibility as the issue?

 

I will monitor and if the issue does return, I will try disabling CEC again and see if that works. If that doesn't do it, I will come back for more advice. Cheers!

I'll just leave these videos here... TL;DR: although HDMI is a specification, few manufacturers seem to give a shit about following it fully.

 

[The Editor Guy]

Hate to continue bugging everyone, but the issues persisted. I tried the following since-

 

Disable CEC. -TV  @MrMase thanks for the suggestion!

Disable GSync. - Comp/TV

Force audio mode Bitstream - receiver

Disable HDR - comp

 

I've noticed now that inside of the Game Settings Mode, when the screen disconnects, the one constant is the Low Latency turns OFF, then if it turns on again, back it comes. I watch it turn off when the screen goes, and watch it turn back on right before screen returns. In the first photo, second option from the right is the one.

 

I've also noticed this rainbow effect happening now and then When screen returns. Photo attached for reference.

 

I am so lost. I'll try anything. I know the HDMI spec for 2.1 is broken, but I also know that my settup should work, and DOES work for others. So what's the bottleneck? I need to find out. Any suggestions are helpful. Thanks for any help!!!