[Baak]

Hi JayZing,

What TV do you use? Model and modelnumber.

The AMD r9 290x has only DP1.2. The CAC-1080 is fpr DP1.4. Maybe try the CAC-1070? Is your HDMI cable 2.0?

[Baak]

Hi Joevt,

HDMI 2.0 is a TMDS signal where the HDMI 2.1 is a FRL signal. Which gets detected by the adapter. If you plug in an HDMI 2.0 cable it wont be able to push a 4k120hz signal. All info is in  the EDID.

[Baak]

Yeah it is very odd..

But a very bold assumption would be they do that because they want to sell their RTX3000 series and not want to have the RTX2000 series be able to do 4K120Hz by a third party adapter…. But we will never know I guess.

 

[Baak]

Hi Rolln,

If you get an RTX3090 those are HDMI 2.1 but the TV’s are still HDMI 2.0. The HDMI 2.0 cable will still be enough to connect from HDMI to HDMI.

If you want to connect the DisplayPort1.4 to the HDMI2.0 You will want to use the CAC-1080. It’s cheaper and does what you need and can.

[Baak]

Hi Rolln,

You don’t need a CAC-1085 for that setup, just a HDMI 2.0 cable will be able to do 4K60Hz.

The 1080 has HDMI 2.0 and so does the TV. Get a CAC-1310 and you are set.

 

[Baak]

Hi Thule,

Thanks, let me know if you have issues. Happy to help 🙂

[Baak]

Looking into this will get back asap

[Baak]

Hi Thule,

Club-3d does not sell cables directly to customers, which shop did you purchase from?

The cables are certified, but the shop you bought from might have stock from before Club-3D applied the stickers. Nothing changed to the cable.

[Baak]

Hi LordDeliverer,

Can you please send your question to [email protected]

Thank you.

[Baak]

Hi Suti,

I’ve seen many problems like this.

I assume you are using an LG C9? If you downgrade to driver 456.38 you will be able to get 4k120Hz. Not sure if the drivers are different for Linux but I believe drivers before November 2020 should work.

I wonder if you get any other error logs via Linux when it doesn’t give you the 4k120Hz. Everyone is wondering why the drivers of Nvidia “block”  the CAC-1085.

[Baak]

Also, can you try to downgrade the Nvidia drivers to 456.38? I’ve seen a lot of people having issues getting the right resolutions but when they use earlier drivers it seems to work.

[Baak]

Hi Nersh,

You made a whole studie about it! What was the grade? No just kidding, nice work there. Love it

[Baak]

Hi Ker,

I think you’d be best of contacting [email protected]

I don’t know what is wrong, but again I doubt you have received 2 faulty adapters.

[Baak]

Hi Ker,

Both your Screen and GPU have HDMI 2.0 , have you tried a HDMI 2.0 cable yet? Does it do the same?

Are there more cables attached to the screen? If so, unplug them all see what happens? Except for the power cable of course :P.

The adapter should be able to do 1080P 144Hz without any troubles. So doubtful you received 2 faulty adapters.

Is your cable a DUAL link or SINGLE Link cable?

https://commons.wikimedia.org/wiki/File:DVI_Connector_Types.svg

 

[Baak]

Hi Nersh,

Without going to much into detail, you might want to look into KVM switches. I have no idea what/which will work with the setup you desire hopefully you can find someone who does!

[Author]

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