Custom Resolution Utility (CRU)

[6UAPSHU9H8]

Hi!

I created a custom resolution in CRU (3840x1080@120Hz) it worked but the resolution is stretched. When I add the same resolution in NCV it doesn't work at all unless it's 60Hz.

As you can see, 3840x1080@120Hz using CRU: https://i.imgur.com/zsNYzYk.jpg Working, HDR also work but the image is stretched.

3840x1080@120Hz using NCP: No Signal

3840x1080@60Hz using NCP: https://i.imgur.com/fqrc3wU.jpg Working, HDR doesn't work but the image is fine.

I have an LG C9.

[ToastyX]

(04-24-2020 03:42 PM)mrpotato Wrote:  Ok will try that. BTW does anyone know if PG279Q has a built in scaler. CRU keeps causing black screen, so maybe it doesn't.

G-SYNC monitors usually only support a limited set of resolutions. You would have to use GPU scaling for other resolutions.

[ToastyX]

(04-24-2020 03:50 PM)6UAPSHU9H8 Wrote:  Hi!

I created a custom resolution in CRU (3840x1080@120Hz) it worked but the resolution is stretched. When I add the same resolution in NCV it doesn't work at all unless it's 60Hz.

As you can see, 3840x1080@120Hz using CRU: https://i.imgur.com/zsNYzYk.jpg Working, HDR also work but the image is stretched.

3840x1080@120Hz using NCP: No Signal

3840x1080@60Hz using NCP: https://i.imgur.com/fqrc3wU.jpg Working, HDR doesn't work but the image is fine.

I have an LG C9.

Seems like the TV doesn't support 3840x1080 @ 120 Hz.

[Nintendo Maniac 64]

(04-24-2020 03:50 PM)6UAPSHU9H8 Wrote:  I created a custom resolution in CRU (3840x1080@120Hz) it worked but the resolution is stretched.

I have an LG C9.

Being a TV, there should be various scaling and stretching modes, including one that displays the pixels "as is" without any scaling.


Normally the solution would be to use GPU scaling, but the C9 does not support 120Hz at 3840x2160 even with 8bit 4:2:0 from HDMI 2.0 sources.

[olco]

I got a new 2020 Huawei Matebook D14 (R5 3500U) and tried to connect it to my Iiyama ProLite XUB3490WQSU-B1.

The Matebook's HDMI output is specified as 2.0b. The Iiyama got HDMI 2.0 and DP 1.2 inputs.

Recently the Iiyama was connected via HDMI to my desktop pc (980ti) which worked fine at 3440x1440@60Hz.
It also works via a DP cable, to which connection I switched for now.

So the problem is, I can only get 3440x1440@30Hz via the Matebook. As the USB-C port of the 2020 version doesn't seem to support DP alternate mode which the 2019 version did, I have to connect it via HDMI.

I am using the same input of the monitor and the same cable which works for my desktop pc, but I only get 30Hz.

So I tried to get it to work using the CRU but wasn't successful.
Is it important for the monitor to get listed as the correct monitor model instead of "PnP-Monitor"?
If I try to set 3440x1440@60Hz via the radeon software (Adrenalin 2020 Edition 20.4.2 from 23.04.2020) as custom resolution the software tells me that the resolution wasn't compatible with that monitor.

Do you have any hints for me, how to get the 60Hz out of the Matebook?

[ToastyX]

(04-25-2020 10:31 AM)olco Wrote:  I got a new 2020 Huawei Matebook D14 (R5 3500U) and tried to connect it to my Iiyama ProLite XUB3490WQSU-B1.

The Matebook's HDMI output is specified as 2.0b. The Iiyama got HDMI 2.0 and DP 1.2 inputs.

Recently the Iiyama was connected via HDMI to my desktop pc (980ti) which worked fine at 3440x1440@60Hz.
It also works via a DP cable, to which connection I switched for now.

So the problem is, I can only get 3440x1440@30Hz via the Matebook. As the USB-C port of the 2020 version doesn't seem to support DP alternate mode which the 2019 version did, I have to connect it via HDMI.

I am using the same input of the monitor and the same cable which works for my desktop pc, but I only get 30Hz.

So I tried to get it to work using the CRU but wasn't successful.
Is it important for the monitor to get listed as the correct monitor model instead of "PnP-Monitor"?
If I try to set 3440x1440@60Hz via the radeon software (Adrenalin 2020 Edition 20.4.2 from 23.04.2020) as custom resolution the software tells me that the resolution wasn't compatible with that monitor.

Do you have any hints for me, how to get the 60Hz out of the Matebook?

Laptop screens sometimes don't have names, so it will appear as Generic PnP Monitor. External monitors usually have names.

I don't know what you can do because the situation you described should be plug and play.

[olco]

I thought the point of the CUR was to overcome these software limitations.

But what is it, I can test to figure out where the problem lies?
Is there a way to find out if the laptop really got HDMI 2.0b and not just HDMI 1.4?
Because it just behaves like my oler Xiaomi Mi Air 13, which only got HDMI 1.4. The resolution of 3440x1440 wasn't the problem, displaying this reasolution at 60Hz was.

Unfortunately I don't own an UHD TV or anything with a higher resolution, so I can't test if 3860x2160@60Hz works. Maybe just 3440x1440@60Hz ist the problem.

[ToastyX]

(04-25-2020 06:45 PM)olco Wrote:  I thought the point of the CUR was to overcome these software limitations.

But what is it, I can test to figure out where the problem lies?
Is there a way to find out if the laptop really got HDMI 2.0b and not just HDMI 1.4?
Because it just behaves like my oler Xiaomi Mi Air 13, which only got HDMI 1.4. The resolution of 3440x1440 wasn't the problem, displaying this reasolution at 60Hz was.

Unfortunately I don't own an UHD TV or anything with a higher resolution, so I can't test if 3860x2160@60Hz works. Maybe just 3440x1440@60Hz ist the problem.

If the monitor supports 3440x1440 @ 60 Hz out of the box, then it's already defined in the EDID, so there's nothing you can do with CRU.

[Nintendo Maniac 64]

(04-25-2020 10:31 AM)olco Wrote:  I am using the same input of the monitor and the same cable which works for my desktop pc, but I only get 30Hz.

Check that the color depth is set the same.

Similarly, what happens if you set a lower resolution, like 1920x1080 - are you then able to set it to 60Hz?

If you're able to successfully do that, then if worst comes to worst, you could always try setting the "pixel format" in your Radeon control panel to something like 4:2:2 or 4:2:0, in which case 60Hz may work...though your color resolution will be reduced (whether this is noticeable to you or not depends on various factors).

[jonomite]

Hello,

I recently purchased an ultrawide monitor (HP e344c) that has an optimal resolution of 3440 x 1440 @ 60 Hz. I hooked it up to my Windows 10 computer and saw that the maximum refresh rate I was able to obtain was only 30 Hz. After doing some research, it appears that I am limited to this refresh rate due to my choice of input - I'm using HDMI 1.4 on integrated graphics, and do not have a DisplayPort available. I then discovered CRU and went through the steps to create a custom resolution of 3440 x 1440 @ 50 Hz, which I've read HDMI 1.4 should support. It does seem to work for a little while but, invariably, the refresh rate always seems to reset back to 29-30 Hz. If I go back to my advanced display adapter properties and check the monitor tab, I do still see the 50 Hz option there, but clicking it doesn't seem to have any effect. Manually running restart64.exe does seem to fix the issue, but I'm wondering what is causing the refresh rate to revert in the first place and whether this problem can be corrected.

Thanks in advance for your assistance.