Custom Resolution Utility (CRU)

[ToastyX]

(03-15-2022 08:26 PM)JasonMT Wrote:  Does that LG CX 48 Gbps EDID hack mean that the CX actually supports 48 Gbps? Is there any way to confirm?

Also, is it sufficient just to change the Maximum FRL rate to 48 Gbps under HDMI 2.1 Support, or do we need to do something else?

If it can display a resolution that requires 48 Gbps such as 3840x2160 @ 120 Hz 4:4:4 12 bpc without issues, then yes. Changing the maximum FRL rate is sufficient.

[JasonMT]

(03-16-2022 01:48 AM)ToastyX Wrote:  

(03-15-2022 08:26 PM)JasonMT Wrote:  Does that LG CX 48 Gbps EDID hack mean that the CX actually supports 48 Gbps? Is there any way to confirm?

Also, is it sufficient just to change the Maximum FRL rate to 48 Gbps under HDMI 2.1 Support, or do we need to do something else?

If it can display a resolution that requires 48 Gbps such as 3840x2160 @ 120 Hz 4:4:4 12 bpc without issues, then yes. Changing the maximum FRL rate is sufficient.

Great. I was just curious what else was changed in that EDID file you provided.

[ShodanCat]

I have an LG C1 hooked up to a 3080 Ti, and I'm trying to use CRU to remove all resolutions except 2560x1440 @ 120hz and 3840x2160 @ 120hz.

So far what I've done is deleted all the 'TV resolutions' except the 3840x2160 120hz one listed in the extension blocks, as well as deleted the few 30hz and below ones from the 'HDMI support' blocks.

This works to remove everything unwanted except 3840x2160 @ 60hz. I tried removing the 3840x2160 @ 60hz one from the 'detailed resolutions' box, which does work, but then NVCP lists 2560x1440 as the 'native' resolution. It doesn't seem to harm anything that way but I'd rather it 'knew' that 4k was the native res.

Then I tried deleting the 3840x2160 @ 120hz resolution from the 'TV resolutions' block, then modifying the 3840x2160 @ 60hz 'detailed resolution' but it won't let me set anything past 60hz for some reason - the boxes just turn red and I can't click 'OK.'

Can anyone help me out and tell me how I should be going about this? Thanks very much!

edit: OK, I realize now the main issue is that CRU doesn't let you edit the 'native' resolution in the 'detailed resolutions' box past 655.35mhz pixel clock - so I guess unless there's a workaround for that, I'd have to deal with 2560x1440 listed as native to truly eliminate the 60hz option..

[Jtepjr]

I am curious, I downloaded CRU to use with my LGC1 OLED and it’s not recognizing 120hz, even though it’s set up
Correctly on the tv AND in windows. Anybody have this issue?

[ToastyX]

(03-19-2022 05:19 PM)Jtepjr Wrote:  I am curious, I downloaded CRU to use with my LGC1 OLED and it’s not recognizing 120hz, even though it’s set up
Correctly on the tv AND in windows. Anybody have this issue?

Describe what you mean by it's not recognizing 120 Hz. What GPU do you have?

[Jtepjr]

(03-19-2022 05:33 PM)ToastyX Wrote:  

(03-19-2022 05:19 PM)Jtepjr Wrote:  I am curious, I downloaded CRU to use with my LGC1 OLED and it’s not recognizing 120hz, even though it’s set up
Correctly on the tv AND in windows. Anybody have this issue?

Describe what you mean by it's not recognizing 120 Hz. What GPU do you have?

I have a 3090. It won’t allow me to
Set a custom resolution (above 2560x1440p) above 60hz.
Nvidia control panel does though.

[ShodanCat]

(03-19-2022 06:52 PM)Jtepjr Wrote:  

(03-19-2022 05:33 PM)ToastyX Wrote:  

(03-19-2022 05:19 PM)Jtepjr Wrote:  I am curious, I downloaded CRU to use with my LGC1 OLED and it’s not recognizing 120hz, even though it’s set up
Correctly on the tv AND in windows. Anybody have this issue?

Describe what you mean by it's not recognizing 120 Hz. What GPU do you have?

I have a 3090. It won’t allow me to
Set a custom resolution (above 2560x1440p) above 60hz.
Nvidia control panel does though.

The only way you can create a custom resolution beyond a pixel clock of 655.35mhz is by adding a "DisplayID 2.0" extension block and then adding a detailed resolution in there. What specific resolution are you trying to add btw?

[Jtepjr]

(03-19-2022 07:10 PM)ShodanCat Wrote:  

(03-19-2022 06:52 PM)Jtepjr Wrote:  

(03-19-2022 05:33 PM)ToastyX Wrote:  

(03-19-2022 05:19 PM)Jtepjr Wrote:  I am curious, I downloaded CRU to use with my LGC1 OLED and it’s not recognizing 120hz, even though it’s set up
Correctly on the tv AND in windows. Anybody have this issue?

Describe what you mean by it's not recognizing 120 Hz. What GPU do you have?

I have a 3090. It won’t allow me to
Set a custom resolution (above 2560x1440p) above 60hz.
Nvidia control panel does though.

The only way you can create a custom resolution beyond a pixel clock of 655.35mhz is by adding a "DisplayID 2.0" extension block and then adding a detailed resolution in there. What specific resolution are you trying to add btw?

Well, I don't want to take up too much of your time, because so far I've actually been able to use Nvidia Control panel in custom resolutions while maintaining 10bit color and HDR, which is something I was anticipating having an issue with. Many have written they have had that issue; however to answer your question, 3840x1800 and 3840x1620. I was hoping to set up CRU just in case it starts to give me a problem. I appreciate your quick replies.

[ToastyX]

(03-19-2022 06:52 PM)Jtepjr Wrote:  I have a 3090. It won’t allow me to
Set a custom resolution (above 2560x1440p) above 60hz.
Nvidia control panel does though.

You need to be more specific. I still have no idea what part you're having trouble with. Describe in detail what you're doing and what happens.

[ToastyX]

(03-17-2022 12:04 AM)ShodanCat Wrote:  edit: OK, I realize now the main issue is that CRU doesn't let you edit the 'native' resolution in the 'detailed resolutions' box past 655.35mhz pixel clock - so I guess unless there's a workaround for that, I'd have to deal with 2560x1440 listed as native to truly eliminate the 60hz option..

I haven't found a way to define the native resolution outside of the first detailed resolution. All the other methods I know seem to be ignored by the graphics driver and Windows.