Custom Resolution Utility (CRU)

[ozgu]

(03-26-2023 03:39 PM)ToastyX Wrote:  

(03-25-2023 01:46 PM)ozgu Wrote:  @ToastyX First of all I'd like to thank you for this super beneficial tool, it is much appreciated!

Secondly, because I couldn't find an answer for my specific question I wanted to ask it here.

Since the monitor I use has variable refresh rate feature I have tried to use it but couldn't succeed.
Whenever I activate the Gsync from the Nvidia control panel and start a game or 3d application screen starts to blink and turns black.

According to the data sheet of the monitor following are the frequency ranges:
*DP (v. 1.4): fh:15~120 kHz, fv:24~75 Hz
*HDMI (v. 1.4): fh:15~120 kHz, fv:24~75 Hz

Then by using the CRU I changed the default vertical frequency range from 24-75 to 48-75 and the problem is fixed.
But my question is the reason why the monitor can't handle the 24-75 range for variable refresh rate is because the monitor has some sort of a fault or because the connection cable I use, or the variable refresh rate range is not as broad as it is specified in the data sheet?

The Gpu I use is Nvidia Gtx1080, and the monitor is connected with a Displayport cable which's version I assume is 1.2.
Also, it should be noted that the default Freesync range in the Data blocks section is 48-75.

I would be appreciated if you could help me about it.
Thanks in advance!

The frequency range in the specs is not necessarily the frequency range supported with FreeSync. You didn't mention what monitor you have. What is the advertised FreeSync range? If there's already a FreeSync data block by default with the range 48-75 Hz, then that might be the correct range. DisplayPort doesn't normally use the FreeSync data block, so maybe NVIDIA's driver is using the range limits instead. If the range limits is used for FreeSync, the horizontal range should be two equal values like 120-120 kHz.

Thank you for your reply.
The monitor is ViewSonic VA3209-2K.
Since this is my first time with a monitor that has variable refresh rate feature, I thought that the frequency range is also range for variable refresh rate.
I have checked the monitor's webpage and its manual but there is no advised/advertised range for variable refresh rate.

And your guess is correct, upper and lower horizontal range limits are equal to each other.

So, in this case is there any need to touch/change anything else other than vertical rate limits? For instance the other data blocks, such as colorimetry, hdr static metadata, video capability etc.

Thanks a lot!

[Jenno7]

(03-26-2023 03:39 PM)ToastyX Wrote:  

(03-24-2023 10:52 PM)Jenno7 Wrote:  I did 78hz before, it's been about 1 year but i cant again 1024x768 75hz and 78hz

How did you do it before? With CRU or some other way? 1024x768 is not the native resolution. You can't add non-native resolutions on laptops with CRU because they don't have scalers. The old GPU method doesn't work for laptop screens, only external monitors.

can i do 1366x768 (main res) 75hz? i did wtih CRU. i don't remember how i did it my gpu hd8670m i54200u (hd4400)

[PLU]

(03-26-2023 03:39 PM)ToastyX Wrote:  The first post tells you why it turns red and what to do.

Well, it says to add a DisplayID extension block but I don't know what I'm supposed to do after that. I've added a DisplayID 2.0 detailed resolution with CVT-RB/2 timings.

[Cronus]

AW2521h
When I set a custom resolution in Nvidia control panel, restart, then run CRU it does not show up it CRU
Also it seems if I make any changes at all to the extension blocks for 300hz and 360hz, they both stop working and forces 240hz only in Nvidia control panel, I can create 363hz on Nvidia control panel and CRU but cannot make any changes on CRU, it only allows me to use "Automatic PC" timing

[ToastyX]

(03-26-2023 07:46 PM)PLU Wrote:  Well, it says to add a DisplayID extension block but I don't know what I'm supposed to do after that. I've added a DisplayID 2.0 detailed resolution with CVT-RB/2 timings.

That's all you need to do to add the resolution. Make sure to delete the old resolution in the other extension block so that doesn't take effect.

[ToastyX]

(03-26-2023 07:04 PM)Jenno7 Wrote:  can i do 1366x768 (main res) 75hz? i did wtih CRU. i don't remember how i did it my gpu hd8670m i54200u (hd4400)

Yes, but the only way that could have worked before is if you used the driver listed in the first post, but you said you can't use that driver. Other drivers didn't support EDID overrides and would have no effect with CRU.

[ToastyX]

(03-26-2023 06:19 PM)ozgu Wrote:  Thank you for your reply.
The monitor is ViewSonic VA3209-2K.
Since this is my first time with a monitor that has variable refresh rate feature, I thought that the frequency range is also range for variable refresh rate.
I have checked the monitor's webpage and its manual but there is no advised/advertised range for variable refresh rate.

And your guess is correct, upper and lower horizontal range limits are equal to each other.

So, in this case is there any need to touch/change anything else other than vertical rate limits? For instance the other data blocks, such as colorimetry, hdr static metadata, video capability etc.

Thanks a lot!

You don't need to change anything else. ViewSonic doesn't specify what the range should be anywhere. If it is supposed to support 24-75 Hz but that doesn't work correctly, then I would consider that to be a defect of the monitor. If it is supposed to be 48-75 Hz as defined in the FreeSync data block, then either ViewSonic didn't define the range limits correctly, or NVIDIA's driver is using the wrong range. Normally DisplayPort uses the range limits and not the FreeSync data block, but I don't know what's supposed to happen if the FreeSync data block exists with DisplayPort and doesn't match the range limits. The FreeSync data block is AMD-specific, so maybe it works correctly with AMD GPUs and NVIDIA ignores it. This is something you might want to contact ViewSonic about because you shouldn't need to tweak anything out of the box.

[ToastyX]

(03-26-2023 09:39 PM)Cronus Wrote:  AW2521h
When I set a custom resolution in Nvidia control panel, restart, then run CRU it does not show up it CRU
Also it seems if I make any changes at all to the extension blocks for 300hz and 360hz, they both stop working and forces 240hz only in Nvidia control panel, I can create 363hz on Nvidia control panel and CRU but cannot make any changes on CRU, it only allows me to use "Automatic PC" timing

CRU is separate from NVIDIA control panel custom resolutions. Run reset-all.exe and restart. Then export a file using CRU. Then make the changes you wanted to make. Then export another file. Post both files here so I can take a look.

[Just_Chert]

Acer SA241YAbi
HDMI
I can not raise the frequency above 75 hertz, through the graphics driver or nvidia amd writes that the display is not supported, through the CRU can not be added due to the fact that the display has already entered 4 profiles with a hertz and their CRU can not change in any way, in this case, how can you raise the hertz frequency or it's display locked from the factory to increase the hertz?

P.S Freesync was disabled when trying to overclock

https://imgur.com/a/GGW9Br4

[sebastian.f]

Hello all,

since I have now spent hours trying to solve the problem myself but unfortunately can not find a proper solution I turn to you.

Since yesterday I have upgraded my monitor from a Gigabyte M32U to a Samsung 43QN90B and unfortunately had to realize that in the Nvidia driver (latest installed yesterday) the DSR function is gone.

Since I play almost all single player games with DSR, this is a very important function for me.


Here are a few things that i tried.

Completely uninstalled the DDU driver and reinstalled the newest one - no success.
Old monitor (M32U) plugged in and DSR is directly available
On the new monitor/TV game mode on and off which did not help.

Then I can take the idea of the tool CRU with which you can overwrite various settings of the monitor.

But here I do not get on so right.

I had it once so run that I had DSR enabled again but then only 30/60hz at 4k could select in the Nvidia driver, 144 was no longer present.

I then reset everything and restarted so that I at least have restored 4K/144Hz.


So it is definitely the device itself and its identification to the RTX4090 or Windows 11.

Does anyone have ne idea how I can set up with the help of CRU that he 4K 144HZ 10/12bit and DSR enabled?

btw: On the HDMI 2.1 cable it does not work either, that runs on the M32U with DSR without problems in the cross test.

OR

Do you know another solution how to set higher resolutions with cru - without Nvidia driver?

I would like to have the 5120 (I think 1.78) and 5760 (2.25x) scaling again to be able to use DLSS.