CAC-1379 Unable to produce 4k120hz signal to B9 OLED TV from RTX 3080

Xaser 0 0 on 17-12-2020

Hi,

It's best to write to support. --> [email protected]

In this forum you get no help, sad but true and also a cheek ...

Best regards

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Paynemaster 0 0 on 04-01-2021

I have the exact same issue with the CAC-1376 on my C9. Once the TV asks to switch to Ultra HD Deep Color, the signal go’s on black

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SUPERNAN 1 0 on 13-01-2021

I have the same exact problem. I bought the optical CAC-1379 Optical cable (65.6ft) and it doesn’t work on both my B9 and C9. I have two LG Oled TV and both resulting in the same behavior which is a black screen as soon as deep color is enabled in the menu of the TV (because it switches to native resolution HDMI 2.1 at 120hz 4:4:4 10bit) and the cable can’t provide enough bandwidth or is not compliant. It’s easy to see the resolution if you use a second monitor (the max I can get if I change it is 4K 60hz YUV420, which is really not what I’v paid for).

I am on the latest version of nvidia drivers 461.09. Both my TVs are on the latest firmware version as well. C9 = 5.00.10 and B9 5.00.02

I suspect the chip inside the cable that can’t process 40 or 48gpbs properly. I am not too sure if this can be upgraded via a firmware update (they did with my Display port to HDMI 2.0 before).

But the matter of fact is that it’s a very expensive cable and I ratter return that one and buy one that works for my B9 and C9. Any help before I return will be appreciated

Baak 0 on 15-01-2021

Hi Supernan,

Please send [email protected] an email they will help you with this issue.

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I have the same exact problem.  I bought the optical CAC-1379 Optical cable (65.6ft) and it doesn't work on both my B9 and C9.  I have two LG Oled TV and both resulting in the same behavior which is a black screen as soon as deep color is enabled in the menu of the TV (because it switches to native resolution HDMI 2.1 at 120hz 4:4:4 10bit) and the cable can't provide enough bandwidth or is not compliant.  It's easy to see the resolution if you use a second monitor (the max I can get if I change it is 4K 60hz YUV420, which is really not what I'v paid for). 
I am on the latest version of nvidia drivers 461.09.  Both my TVs are on the latest firmware version as well. C9 = 5.00.10 and B9 5.00.02 
I suspect the chip inside the cable that can't process 40 or 48gpbs properly.  I am not too sure if this can be upgraded via a firmware update (they did with my Display port to HDMI 2.0 before).  
But the matter of fact is that it's a very expensive cable and I ratter return that one and buy one that works for my B9 and C9.  Any help before I return will be appreciated

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