Custom Resolution Utility (CRU)

[ToastyX]

(12-07-2020 11:21 AM)Likun Wrote:  So I just got a new Xiaomi Curved 34" monitor + Nvidia 3060 ti.
When I open CRU I only get 3440x1440 @120 Hz resolution instead of @144 Hz. In Nvidia Control panel or windows display settings I can select 144 Hz though.
Is this considered to be normal? Shouldn't it be @144 Hz in CRU too?

The second extension block ("Default extension block") is probably a DisplayID extension block that contains 3440x1440 @ 144 Hz, but CRU can't read more than one extension block with NVIDIA because the driver doesn't provide it for some reason. You'll have to delete the default extension block and add a DisplayID extension block, then manually add 3440x1440 @ 144 Hz.

[ToastyX]

(12-07-2020 01:37 PM)traderdude123 Wrote:  I also have similar issue, my panel(LG CX OLED) has 120hz native refresh rate, but i see only 60 hz in CRU detailed resolution.

The LG CX has 3840x2160 @ 120 Hz as a TV resolution. It doesn't need to be a detailed resolution. HDMI doesn't normally use DisplayID, so there's no way to define 3840x2160 @ 120 Hz with an EDID detailed resolution because of the high pixel clock.

[Likun]

(12-07-2020 03:25 PM)ToastyX Wrote:  

(12-07-2020 11:21 AM)Likun Wrote:  So I just got a new Xiaomi Curved 34" monitor + Nvidia 3060 ti.
When I open CRU I only get 3440x1440 @120 Hz resolution instead of @144 Hz. In Nvidia Control panel or windows display settings I can select 144 Hz though.
Is this considered to be normal? Shouldn't it be @144 Hz in CRU too?

The second extension block ("Default extension block") is probably a DisplayID extension block that contains 3440x1440 @ 144 Hz, but CRU can't read more than one extension block with NVIDIA because the driver doesn't provide it for some reason. You'll have to delete the default extension block and add a DisplayID extension block, then manually add 3440x1440 @ 144 Hz.

Thanks for the input. Like this?
How can I check if it's working correctly?
In the "detailed resolution" box it remains at @120 Hz.

[plaganum]

(10-23-2020 11:53 PM)ToastyX Wrote:  

(10-23-2020 08:07 PM)plaganum Wrote:  Hey ToastyX! I'm hoping you can help.

I have an Acer ED273UR 1440/144Hz display connected to my gaming PC (RX 5700 XT) with DP, 1440, Freesync, all good. Nintendo Switch on the HDMI input, also good (though 1080p obv).

On the DVI input, I have a Thinkpad dock connected to an HDMI KVM, then to the monitor with an HDMI-DVI cable. The dock is shared between a T450s (i5-5300U) and X270 (i5-6300U). When I first connected this, it was finicky, but it worked at 1440/60 (albeit with very minor artifacts). Something happened yesterday and now it refuses to recognize 2560x1440 as an available resolution.

I tried creating a custom resolution in the Intel control panel but I get "The custom resolution exceeds the bandwidth capacity."

I downloaded CRU and added 1440/60 to the Detailed Resolutions, but it's still not available. Not sure if the Intel driver links on the first post of this thread are accurate, but they reference v15 and I'm on v20 and v26. The Intel links also say the drivers are only for Win 7 and 8.1, but I'm on 10.

You need an HDMI support data block in the first extension block. Intel changed the links at some point. I don't know which drivers work with EDID overrides. The way they handle drivers is confusing. They have a bunch of different driver versions and multiple branches for different GPUs instead of a single unified driver like AMD and NVIDIA. Newer drivers should work, but some people had issues with DCH drivers.

Hey ToastyX, I'm back. I've been using straight HDMI in the interim. I'm still in the same boat, except that I've given up on the KVM.

At this point, I'm trying to follow the instructions for "older Intel cards," and it's kinda working, but not really.

So here's my testing setup. I have my PC's HDMI connected to an HDMI A/B switch. The A side has an HDMI cable connected to the HDMI input of the monitor. The B side has an HDMI/Dual-Link-DVI-D cable connected to the DVI-D input of the monitor. If I plug it in while the switch is on B (DVI), it detects 1080 and won't go any higher. If I plug it in while the switch is on A (HDMI), it detects 1440 and angels sing from the heavens.

If I switch it from A to B, since it was never "unplugged," it doesn't detect the change, and it keeps displaying 1440 beautifully over DVI.

But if I do anything else--unplug it, undock the laptop, or anything--it immediately reverts back to ugly 1080.

If I launch CRU while it's correctly displaying 1440 and I export that, then I re-import it (via .exe or CRU import) while it's stuck in 1080, it's so much worse. The image is 1440 downsampled to 1080, upscaled back to 1440, and it looks like a nightmare.

I'm about to just plug in an external HDMI switch and call it a day, but I really want to get this working. It's killing me that it's so close. Is there any info I can provide to help get this to behave?

Here's CRU with the correct resolution:


And without:

[ToastyX]

(12-08-2020 02:12 AM)plaganum Wrote:  I'm about to just plug in an external HDMI switch and call it a day, but I really want to get this working. It's killing me that it's so close. Is there any info I can provide to help get this to behave?

I said you need an HDMI support data block in the first extension block. I don't see that in your screen shots. Why not just use HDMI-DVI with the Nintendo Switch instead, since it only needs 1080p? Then you won't have to deal with workarounds.

[ToastyX]

(12-07-2020 04:03 PM)Likun Wrote:  How can I check if it's working correctly?
In the "detailed resolution" box it remains at @120 Hz.

Easy way to test is delete 144 Hz and see if it disappears, or add 143 Hz and see if it's available.

[Likun]

(12-08-2020 03:18 AM)ToastyX Wrote:  

(12-07-2020 04:03 PM)Likun Wrote:  How can I check if it's working correctly?
In the "detailed resolution" box it remains at @120 Hz.

Easy way to test is delete 144 Hz and see if it disappears, or add 143 Hz and see if it's available.

Thank you very much. I tried that and can confirm that it's working.

[traderdude123]

@ToastyX,

So is there any way i can force 12 bpc at 4k/100hz/ycbcr444?

[plaganum]

(12-08-2020 03:16 AM)ToastyX Wrote:  

(12-08-2020 02:12 AM)plaganum Wrote:  I'm about to just plug in an external HDMI switch and call it a day, but I really want to get this working. It's killing me that it's so close. Is there any info I can provide to help get this to behave?

I said you need an HDMI support data block in the first extension block. I don't see that in your screen shots. Why not just use HDMI-DVI with the Nintendo Switch instead, since it only needs 1080p? Then you won't have to deal with workarounds.

I can't use the DVI on the Switch because the monitor annoyingly doesn't support DVI audio. I do agree that would be the best solution.

I initially didn't understand what you meant by an HDMI support data block, but poking around, I see the options now. I'll see if I can get it working. Thanks so much!!!

[mederic.caldas]

Hi All,

I'm an old user of CRU since my surface book 1 & 2. It used to work and let me redure the main screen resolution from 3k*2k to 1920*1280 with a 150% scaling instead of 200% or more.

Nevertheless I have now a surface book 3 and this method doesnt work. I try to add a resolution like 1920*1280 and after a restart screen is black.... Only way to resolve it is by a reset with external screen.

Can you give me some advice about reducing the def on main screen to redure scaling.... Cause with external HDMI screen it makes the programs goes wrong with some blurry window.

Many thaks for your help