Question New LG C4, getting more than 60hz, infuriating

[blueangel42]

I cant, for the life of me, get higher than 4k 60hz on my new C4 display. I was easily able to get this to work, as my current set up is, on my 2023 Samsung S90C; 4k 120hz.

I have done a lot of searching, and I think this is going to come down to someone confirming my suspicion that the C4 refuses to play nice with Display Port to HDMI adaptors. But I am no expert and really just learned alot about different HDMI / DP capabilities over the last 3 hours.

I am using such an adaptor, coming out of my 5700xt graphics card (DP 1.4a, capable of 4k 120hz, at least through DSC), going into a 35ft HDMI 2.1 cable, into my C4 display. Both these adaptors are 8k 60hz / 2.1 hdmi "ultra bandwidth" compatible

This hardware setup works flawlessly on my 2023 S90C, all I have to do is make sure Game Mode is on, and BOOM, 120hz works.

For some ungodly reason, this does NOT work with my new 2024 LG C4. I cant get more than 4k 60hz. I think it has something to do with the C4 not liking my display port output, even though I am using an HDMI adaptor.

has anyone else had this issue?

I have 2 videos showing my issue:

works on S90C

no work on C4

 

[COLGeek]

Drop the adapter. That is likely the issue.

 

[blueangel42]

but i need the adaptor! My graphics card's HDMI outs only support 4k 60hz, but the display port out supports higher with DSC

 

[COLGeek]

Those adapters typically only meet the standard speeds.

 

[blueangel42]

What standard? the adaptor solution i have is working fine putting out 4k 120hz to my Samsung

Is there another way i can trick my c4 into thinking its getting what it needs? like a true DP to HDMI converter?

 

[BFG-9000]

Well there sure was a way but your card is a generation too new.

So you could look for a utility that does the same for RDNA cards.