Custom Resolution Utility (CRU)

[ToastyX]

(12-02-2020 04:23 AM)easterhands Wrote:  My tv says incompatible signal or something like that

Then the TV doesn't support the resolution.

[traderdude123]

(12-02-2020 04:12 PM)ToastyX Wrote:  

(12-02-2020 03:57 PM)traderdude123 Wrote:  any way to add 4k/100hz/12bpc/444 for my LG CX connected to 3070.

when i select 4k/100hz , i get only 8 and 10 bpc as options.

4k/100hz/12bpc/444 is well with in 40 Gbps hdmi 2.1 port on LG CX, but nvcp not allowing 12 bpc @ 100 hz.

Anyway to add this particular configuration via CRU?

In the CEA-861 extension block, in the HDMI data block, are "YCbCr 4:4:4 deep color" and "36-bit deep color (12 bpc)" enabled?

yes, they are enabled.

https://ibb.co/cFWJsK2

[traderdude123]

another update.

I also tried to edit and add 4k 100 hz in the detailed resolution , but its not allowing me to go over 60 hz. It shows numbers in red color if i go above 60 hz.

[easterhands]

(12-02-2020 04:13 PM)ToastyX Wrote:  

(12-02-2020 04:23 AM)easterhands Wrote:  My tv says incompatible signal or something like that

Then the TV doesn't support the resolution.

I can create the resolution in nvidia control panel and it works, just HDR doesn't come on which is why I want to use CRU. So I assume I'm not doing something right.

[ToastyX]

(12-02-2020 08:14 PM)easterhands Wrote:  I can create the resolution in nvidia control panel and it works, just HDR doesn't come on which is why I want to use CRU. So I assume I'm not doing something right.

What timing parameters are you using with the NVIDIA control panel?

[ToastyX]

(12-02-2020 06:24 PM)traderdude123 Wrote:  I also tried to edit and add 4k 100 hz in the detailed resolution , but its not allowing me to go over 60 hz. It shows numbers in red color if i go above 60 hz.

You have to add it as a TV resolution or in a DisplayID extension block.

[easterhands]

(12-02-2020 10:36 PM)ToastyX Wrote:  

(12-02-2020 08:14 PM)easterhands Wrote:  I can create the resolution in nvidia control panel and it works, just HDR doesn't come on which is why I want to use CRU. So I assume I'm not doing something right.

What timing parameters are you using with the NVIDIA control panel?

So I left everything is automatic and it seems like it's leaving the active pixels the full resolution and just changing the windows display resolution.

https://cdn.discordapp.com/attachments/5...nknown.png

I see in CRU I have to change the active pixels it seems? No alternate timing presets where it changed the active resolution worked on my display.

[ToastyX]

(12-02-2020 11:37 PM)easterhands Wrote:  So I left everything is automatic and it seems like it's leaving the active pixels the full resolution and just changing the windows display resolution.

https://cdn.discordapp.com/attachments/5...nknown.png

I see in CRU I have to change the active pixels it seems? No alternate timing presets where it changed the active resolution worked on my display.

That's a GPU-scaled resolution. CRU can't create scaled resolutions directly, but you can enable GPU scaling in the NVIDIA control panel by going to "Adjust desktop size and position" and setting "Perform scaling on:" to GPU. Then lower resolutions will be scaled to the native resolution by the GPU instead of sending it to the TV. In this case, both "Aspect ratio" and "No scaling" will center the resolution with black bars since the width isn't being changed.

[traderdude123]

(12-02-2020 10:36 PM)ToastyX Wrote:  

(12-02-2020 06:24 PM)traderdude123 Wrote:  I also tried to edit and add 4k 100 hz in the detailed resolution , but its not allowing me to go over 60 hz. It shows numbers in red color if i go above 60 hz.

You have to add it as a TV resolution or in a DisplayID extension block.

4k/100hz is available in TV resolution.

I tried adding in the DisplayID extension block and when i restart, signal goes off.

Had to reset all.

---

Another update:

When i select YCC442 in the nvcp , i get 4k/100hz/12bpc.

is there some restriction in the bandwdith per channel in the HDMI 2.1?if that is indeed the case, then i think its not possible to get YCC444/4k/100hz/12 bpc.

what you think?

[ToastyX]

(12-03-2020 07:25 AM)traderdude123 Wrote:  is there some restriction in the bandwdith per channel in the HDMI 2.1?if that is indeed the case, then i think its not possible to get YCC444/4k/100hz/12 bpc.

HDMI 2.1 has enough bandwidth. It might be a GPU or driver limitation.