How to test if DSC is enabled.

[LoveTilapia]

Hello friends.

I bought a cable and I want to test its quality. I have an AMD 7900xt.

Is there a way to tell if DSC is enabled on the PC end for AMD users, I know Nvidia has that DSR not working trick when DSC is enabled. I know my TV can support 48gbit without DSC, but there are no DSC indicators.

I have asked the question to ToastyX maker of CRU, he also doesn't know of anything to indicate DSC on AMD gpus.

[Chief Blur Buster]

I need to research this some more.

We've had problems determining whether DSC is enabled, because of lack of utilities informing me whether DSC is enabled or not.

There is a need.

Expensive third party equipment (e.g. AstroDesign) will do it, but end users are sometimes left adrift.

[LoveTilapia]

Salutes Chief,

Thanks for the chime in.

According to ToastyX Nvidia defaults to Ignore DSC setting in EDID. Do you think this is because they were getting too many complaints/ black screens from people with bad cables, so they may have decided, well shucks, let's turn on DSC whenever possible, to that chagrin of all enthusiasts.

I wonder what AMD does. Is there perhaps a visual test pattern we can create where the DSC will produce obvious compression blur.

[kurtdh]

I need to research this some more.

We've had problems determining whether DSC is enabled, because of lack of utilities informing me whether DSC is enabled or not.

There is a need.

Expensive third party equipment (e.g. AstroDesign) will do it, but end users are sometimes left adrift.

So I've been looking into this, and apparently you can tell using GPU-Z. Under the "advanced" tab, there's a section for "Link Rate" under each monitor. I run a 5080 with a FO32U2P 32 inch 4k 240hz monitor with a VESA certified 6 foot DP 2.1 cable. Link rate shows "20.0 Gbps" for me. Someone on reddit says this means I'm running full DP 2.1 bandwidth with no DSC. Can you confirm this?