Custom Resolution Utility (CRU)

[AchillesBoi]

(11-23-2020 06:52 PM)ToastyX Wrote:  

(11-23-2020 11:33 AM)AchillesBoi Wrote:  A new driver version came out recently and I clean-installed it but the bug is still present. I downgraded to several older versions from months ago to try to find one that works but the bug is present in all driver versions. The only way to avoid the bug is to use reset-all.exe then restart-64.exe (or reboot) and then not use CRU at all.

In Radeon Settings, under Settings (cogwheel at the top-right), Graphics, Advanced (at the bottom), do you have an option for 10-bit pixel format? If so, try enabling it.

I think the last driver that didn't have this issue was 19.2.1, but Windows 10 will automatically upgrade to a newer driver if you install a version that's too old.

I always install the latest version of my GPU drivers, straight from AMD's website and not from the Windows Store/Update. I do not have the 10-bit pixel format enabled from within Graphics -> Advanced because all my games take a massive performance hit when I enable it. I do have 10 bpc enabled on the Display tab since my monitor is compatible with 10 bpc, and I would like to continue using 10 bpc.

It seems to me that the bug here is caused by editing the EDID, maybe something CRU is doing is conflicting with the way Windows (or the GPU) reads that data? Allowing Windows to build the EDID from scratch shows no issues, but presenting Windows with an edited EDID creates the issue.

[easterhands]

Hello there, Is it possible to create HDMI 2.1 spec custom resolutions? I'm having trouble figuring it out if so. I have an LG B9 with an RTX 3080 and am trying to create an ultrawide 3840x1620 resolution that will support HDR and 12 bit color at 120hz.

[ToastyX]

(12-01-2020 12:11 AM)easterhands Wrote:  Hello there, Is it possible to create HDMI 2.1 spec custom resolutions? I'm having trouble figuring it out if so. I have an LG B9 with an RTX 3080 and am trying to create an ultrawide 3840x1620 resolution that will support HDR and 12 bit color at 120hz.

That depends on the driver. What happens when you add 3840x2160 @ 120 Hz with CRU?

[ToastyX]

(11-30-2020 09:32 PM)AchillesBoi Wrote:  It seems to me that the bug here is caused by editing the EDID, maybe something CRU is doing is conflicting with the way Windows (or the GPU) reads that data?

No, it's an AMD driver bug. It's probably applying an 8-bit gamma table to 10-bit color, causing 1/4th the brightness.

[ToastyX]

(11-29-2020 06:30 PM)mlleemiles Wrote:  Yes, adding anything will crash driver unfortunately. My monitor is connected via VGA to DVI connector.

That's definitely a driver bug. Try reporting it to NVIDIA by opening a ticket: https://www.nvidia.com/en-us/support/consumer/

[easterhands]

[/quote]
That depends on the driver. What happens when you add 3840x2160 @ 120 Hz with CRU?
[/quote]

anything over 60hz goes red, using the DisplayId method is the only way it lets me put in anything over 60hz at 4k but I never get a usable resolution no matter what timing preset I do. Not sure what I'm not doing right

[ToastyX]

(12-01-2020 01:35 PM)easterhands Wrote:  anything over 60hz goes red, using the DisplayId method is the only way it lets me put in anything over 60hz at 4k but I never get a usable resolution no matter what timing preset I do. Not sure what I'm not doing right

What do you mean by usable resolution? What happens if you try to set the resolution?

[easterhands]

(12-01-2020 03:26 PM)ToastyX Wrote:  

(12-01-2020 01:35 PM)easterhands Wrote:  anything over 60hz goes red, using the DisplayId method is the only way it lets me put in anything over 60hz at 4k but I never get a usable resolution no matter what timing preset I do. Not sure what I'm not doing right

What do you mean by usable resolution? What happens if you try to set the resolution?

My tv says incompatible signal or something like that

[traderdude123]

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?

[ToastyX]

(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?