Custom Resolution Utility (CRU)

[ToastyX]

(09-23-2021 09:51 PM)Wrighton Wrote:  Would there be any reason why going from an older AMD driver to the latest would prevent creating a 4K resolution at 120hz?

The screen supports 4K 120hz using HDMI.
My graphics card is only HDMI 2.0, but it used to work on 4K 120hz @ 4:2:0, but now no longer with the new graphics driver. Almost as if they’ve locked 120hz out.

That should work. Report it to AMD.

[ToastyX]

(09-24-2021 03:23 PM)BlankJoe Wrote:  When executing restart.exe the app "VMware" crashes immediately each time.
Is there a possibillity for a fix?

No, you shouldn't run restart.exe while anything is using the GPU.

[Eddye]

Hello, I sold my ultrawide last week and bough 3 same monitors LG@75Hz, but in surround not be able to active 75Hz. My GPU is a RTX 2060 Super with 2 DP and 1 HDMI, well I think the problem is the HDMI cable, because when I surround 2 monitors (DP) 75Hz can be active, when I active the 3 monitors, it's not be able, there are any issues in CRU to change for 75Hz?

Ps: In windows extented mode, all the monitors can run in 75Hz, well, the center monitor (HDMI) reach 75.003Hz and other 2 monitors (DP) can reach 75.000Hz.

[dustybooga]

hello,

i seem to have issues with every new version of the AMD Radeon drivers. the latest drivers i am able to define a custom resolution with AMD Radeon as well as CRU, but neither allow a custom refresh rate.

do i need to reach out to AMD?

thank you.


EDIT:
figured it out...non official releases of the AMD Radeon Adrenaline drivers do not allow custom refresh rates. recommended drivers only, optional do not work.

[ToastyX]

(09-26-2021 06:27 AM)dustybooga Wrote:  i seem to have issues with every new version of the AMD Radeon drivers. the latest drivers i am able to define a custom resolution with AMD Radeon as well as CRU, but neither allow a custom refresh rate.

What you're saying doesn't make sense. The refresh rate is part of the resolution, and drivers don't normally restrict refresh rates. If you can define a custom resolution, then you should be able to define a custom refresh rate as long as it's within pixel clock limits.

[ToastyX]

(09-26-2021 04:06 AM)Eddye Wrote:  Hello, I sold my ultrawide last week and bough 3 same monitors LG@75Hz, but in surround not be able to active 75Hz. My GPU is a RTX 2060 Super with 2 DP and 1 HDMI, well I think the problem is the HDMI cable, because when I surround 2 monitors (DP) 75Hz can be active, when I active the 3 monitors, it's not be able, there are any issues in CRU to change for 75Hz?

Ps: In windows extented mode, all the monitors can run in 75Hz, well, the center monitor (HDMI) reach 75.003Hz and other 2 monitors (DP) can reach 75.000Hz.

The timing parameters need to match exactly. You can copy the 75 Hz detailed resolution from one of the monitors to make them match, but NVIDIA's driver also has a bug that may cause Surround to disable after rebooting when using CRU. If that happens, you might have better luck using active DisplayPort to HDMI adapters so all three monitors use HDMI.

[voxhel]

(09-25-2021 02:11 PM)ToastyX Wrote:  

(09-21-2021 01:47 PM)voxhel Wrote:  Every time i try to go over 100Hz goes red and just not let me click OK. Bellow its max i can get without going into blackscreen.

Read the first post.

Hi, thks for the reply.

Taking into consideration this line from the 1st post:
"EDID detailed resolutions are limited to 4095x4095 and 655.35 MHz pixel clock. If a value turns red, that means it's invalid or out of limits. Use a DisplayID extension block to add resolutions with higher limits."

I have change configs to the DisplayID as in the 1st post but no changes are done in the list of the resolutions@Hz i can choose.

The print of the configs.
https://imgur.com/a/65Fiyzn

[ToastyX]

(09-27-2021 02:25 PM)voxhel Wrote:  I have change configs to the DisplayID as in the 1st post but no changes are done in the list of the resolutions@Hz i can choose.

Delete the default extension block, and try DisplayID 1.3.

[S0larSoul]

Hi! Could you please help me with CRU? My setup is the following:
GTX 1066
TCL 50DP600 (4k HDMI 2.0 TV)
10m HDMI Cable (9 GBps)

Since I have such a long cable (I need it to be this long, and I couldn't find any better for halfway reasonable price), it has limited bandwidth - 9 GBps. What I want is to use my TV at 4k@60@YCbCr420, but support other resolutions and refresh rates at 420. It works pretty much perfectly when set up 4k@60@YCbCr420, but I have two major issues, which come down to TV's EDID, specifically combination of resolution, refresh rate and chroma subsampling. First one - when I try to run any other refresh rate other than 60 (23.976 specifically, but 30 and 50 would be nice to have too) I can't set 420, only RGB, 444, 422. Actually, I can't even set 420 for 1080p, no matter refresh rate. On top of that, I have an issue considering limited and full RGB spaces. When 4k@60@YCbCr420 is set, TV for whatever mysterios reason to me, accepts and shows colors as if they were in full RGB instead of limited. BUT when I switch to 422, it shows as it is limited RGB.
Long story short - when TV switches to other than 60Hz refresh rate, it messes up the colors. I could live with "real" limited color space, but if it was actually limited all the time, not only when refresh rate switch occures.
Oh, and on top of that, games don't work on non-native resolutions in fullscreen (scaling is set to be done on GPU), just no signal. My best guess is that is somehow related to the issues above, but I don't know.
Could there be something done with CRU? I've attached exported .bin from my TV to take a look at.

[ToastyX]

(09-30-2021 12:38 PM)S0larSoul Wrote:  Hi! Could you please help me with CRU? My setup is the following:
GTX 1066
TCL 50DP600 (4k HDMI 2.0 TV)
10m HDMI Cable (9 GBps)

Since I have such a long cable (I need it to be this long, and I couldn't find any better for halfway reasonable price), it has limited bandwidth - 9 GBps. What I want is to use my TV at 4k@60@YCbCr420, but support other resolutions and refresh rates at 420. It works pretty much perfectly when set up 4k@60@YCbCr420, but I have two major issues, which come down to TV's EDID, specifically combination of resolution, refresh rate and chroma subsampling. First one - when I try to run any other refresh rate other than 60 (23.976 specifically, but 30 and 50 would be nice to have too) I can't set 420, only RGB, 444, 422. Actually, I can't even set 420 for 1080p, no matter refresh rate. On top of that, I have an issue considering limited and full RGB spaces. When 4k@60@YCbCr420 is set, TV for whatever mysterios reason to me, accepts and shows colors as if they were in full RGB instead of limited. BUT when I switch to 422, it shows as it is limited RGB.
Long story short - when TV switches to other than 60Hz refresh rate, it messes up the colors. I could live with "real" limited color space, but if it was actually limited all the time, not only when refresh rate switch occures.
Oh, and on top of that, games don't work on non-native resolutions in fullscreen (scaling is set to be done on GPU), just no signal. My best guess is that is somehow related to the issues above, but I don't know.
Could there be something done with CRU? I've attached exported .bin from my TV to take a look at.

Last I checked, NVIDIA only supports 4:2:0 with 3840x2160 @ 50/60 Hz and higher, and GPU scaling won't work with 4:2:0, so what you want can't be done. Are you not able to get 3840x2160 @ 60 Hz with 4:2:2? That's only 12 Gbps. YCbCr is supposed to be always limited range. What happens if you try lower resolutions with RGB instead of YCbCr? The first detailed resolution is what GPU scaling will scale to, so try making that 1920x1080 @ 60 Hz to avoid the black screen. The best solution might be to get an HDMI signal booster and two 5m cables.