Custom Resolution Utility (CRU)

[carlluchi]

(04-22-2020 03:57 PM)ToastyX Wrote:  

(04-22-2020 03:42 PM)carlluchi Wrote:  The default extension block is empty, cant see 3840x2160 anywhere, only in control panel in windows we see that resolution.

Then delete the extension block. I don't know why it's not showing the extension block for you, but 3840x2160 is probably in there.

Great help, thank you, i deleted the tvresolutions in the block, and know it works, i can set the surround with 7680x1440.

Thank you very much for your help.

[Nintendo Maniac 64]

Since it seems like my question was not responded to, I'll ask a similar yet different question that should be less blunt and easier to answer:

Is there any way for CRU to create a curstom resolutions over 600MHz for HDMI 2.0 connections?

I understand that it's out-of-spec, but there are physical products being sold today like the LG CX that have out-of-the-box support for 4k 120Hz 4:2:0 8bit over HDMI 2.0 without any need for a custom resolution, and people are simply trying to find a way to feed it a slightly lower refresh rate (such as reduced blanking 100Hz) so as to free up enough bandwidth in hopes of enabling 10bit HDR.

[ToastyX]

(04-22-2020 08:53 PM)Nintendo Maniac 64 Wrote:  Is there any way for CRU to create a curstom resolutions over 600MHz for HDMI 2.0 connections?

I understand that it's out-of-spec, but there are physical products being sold today like the LG CX that have out-of-the-box support for 4k 120Hz 4:2:0 8bit over HDMI 2.0 without any need for a custom resolution, and people are simply trying to find a way to feed it a slightly lower refresh rate (such as reduced blanking 100Hz) so as to free up enough bandwidth in hopes of enabling 10bit HDR.

4k 120 Hz 4:2:0 is still under 600 Mcsc. I don't have a way around the 600 Mcsc limit.

[ToastyX]

(04-22-2020 04:02 PM)azthek Wrote:  There isn't an extension block of any sort, should there be? on the old gpu it worked without them.
https://imgur.com/sizNHlV

Then try changing the detailed resolution to "LCD reduced" timing.

[Nintendo Maniac 64]

(04-22-2020 09:10 PM)ToastyX Wrote:  4k 120 Hz 4:2:0 is still under 600 Mcsc. I don't have a way around the 600 Mcsc limit.

Wait, so is the issue that CRU can not specially create a resolution with only 4:2:0 as the chroma subsampling value is independent of a given resolution?

In other words, in order to create any sort of custom resolution through CRU, you must have the bandwidth to run a given resolution at 8bit 4:4:4 even if you aren't going to be using 8bit 4:4:4?

[ToastyX]

(04-22-2020 09:19 PM)Nintendo Maniac 64 Wrote:  Wait, so is the issue that CRU can not specially create a resolution with only 4:2:0 as the chroma subsampling value is independent of a given resolution?

In other words, in order to create any sort of custom resolution through CRU, you must have the bandwidth to run a given resolution at 8bit 4:4:4 even if you aren't going to be using 8bit 4:4:4?

Detailed resolutions are going to be 4:4:4. In the extension block, you can add a TV resolutions data block and check "4:2:0 resolutions" to add 4:2:0 resolutions, but you're limited to certain resolutions.

[Nintendo Maniac 64]

(04-22-2020 09:37 PM)ToastyX Wrote:  In the extension block, you can add a TV resolutions data block

How does the bandwidth of these "TV resolutions" compare to creating the same detailed resolutions with "LCD Reduced" and "LCD Standard"?


The concern here is that 4k 100Hz 4:2:0 at "LCD Standard" only has enough bandwidth to use 8bit, but 4k 100Hz 4:2:0 at "LCD Reduced" has enough bandwidth for 10bit.

[azthek]

(04-22-2020 09:11 PM)ToastyX Wrote:  Then try changing the detailed resolution to "LCD reduced" timing.

Again, nothing changed, apart from it being [+/-]. same issue persists.

[ToastyX]

(04-22-2020 09:50 PM)Nintendo Maniac 64 Wrote:  How does the bandwidth of these "TV resolutions" compare to creating the same detailed resolutions with "LCD Reduced" and "LCD Standard"?


The concern here is that 4k 100Hz 4:2:0 at "LCD Standard" only has enough bandwidth to use 8bit, but 4k 100Hz 4:2:0 at "LCD Reduced" has enough bandwidth for 10bit.

"4:2:0 resolutions" use half the bandwidth. There's no way to add custom 4:2:0 resolutions.

[ToastyX]

(04-22-2020 10:02 PM)azthek Wrote:  Again, nothing changed, apart from it being [+/-]. same issue persists.

Then I don't see a way around this except to get an HDMI-VGA adapter. The TV probably treats VGA differently.