Custom Resolution Utility (CRU)

[ToastyX]

(12-03-2023 02:26 PM)funtomi Wrote:  It's an old Haswell processor with Intel HD4400 integrated graphics and intel doesn't make new drivers for it anymore. Windows itself installed the latest version. Maybe if I could find some alternative drivers.

The issue might be because you're using a DVI-HDMI cable. Technically a DVI port can act as an HDMI port, but single-link DVI normally should not exceed 165 MHz pixel clock, so the driver might not be allowing that on the DVI port even though the hardware is technically capable. You would have to use straight HDMI or an active DisplayPort to HDMI adapter to avoid that limitation.

[funtomi]

the interesting thing is that everything works under linux, so the cable is OK.
I can add 2560x1440, 60i (interlaced) resolution via CRU, but when I switch to this resolution the image on the monitor is broken

[jeffeh12133]

(11-29-2023 12:12 AM)ToastyX Wrote:  

(11-28-2023 05:05 PM)jeffeh12133 Wrote:  3) So by default with fresh CRU display settings there are some settings preloaded from the EDID via nvidia which are confusing. Why does a DisplayPort-connected monitor to a PC have CTA-861 data blocks such as "Colorimetry" (with xvYCC, bt2020, and other modes checked + md0), "Audio formats", "Speaker setup" and "HDR Static Metadata". Isn't a VESA DisplayPort supposed to support all of these in a PlugnPlay fashion? Perhaps these are for connecting the monitor to a console I'm assuming? It makes no sense to have Colorimetry for example when I read that it's strictly an HDMI setting. Was curious about that.

CTA-861 data blocks are not specific to HDMI. DisplayPort supports colorimetry, audio, and HDR.

So on a true 8-bit monitor you'd recommend setting colorimetry to "Default RGB" or "sRGB"? Would they be supported? By default it only checkmarks the first two xvYCC and BT2020RGB, there is no checkmarks for the Default RGB or sRGB. Should I enable them and uncheck the others to force the monitor to run 8-bit RGB full?

[ToastyX]

(12-05-2023 07:08 AM)jeffeh12133 Wrote:  So on a true 8-bit monitor you'd recommend setting colorimetry to "Default RGB" or "sRGB"? Would they be supported? By default it only checkmarks the first two xvYCC and BT2020RGB, there is no checkmarks for the Default RGB or sRGB. Should I enable them and uncheck the others to force the monitor to run 8-bit RGB full?

That doesn't matter. The colorimetry color spaces have nothing to do with the output color format, and I'm not sure Windows even uses the colorimetry information. Just make sure the YCbCr 4:4:4/4:2:2 color formats are disabled if you only want RGB.

[ToastyX]

(12-04-2023 06:39 AM)funtomi Wrote:  the interesting thing is that everything works under linux, so the cable is OK.
I can add 2560x1440, 60i (interlaced) resolution via CRU, but when I switch to this resolution the image on the monitor is broken

That's because the Linux driver is allowing it, but single-link DVI ports normally should not exceed 165 MHz pixel clock, while HDMI and DisplayPort can.

[chop]

I need some assistance trying to use cru. I have the hz benq zowie xl2566k and I cant use the 360 hz and when I try to change my resolution through "List all modes" black bars just appear when I press "okay"

[pcwizard7]

@ToastyX

Could you point me to an EDID file that's unlocks everything and optimized for a 55in LG CX? I mainly want to solve screen flickering on and off randomly on PCs.
From what I read online it might have to do with either Gsync or VRR but unsure

thanks

[jeffeh12133]

(12-05-2023 01:50 PM)ToastyX Wrote:  

(12-05-2023 07:08 AM)jeffeh12133 Wrote:  So on a true 8-bit monitor you'd recommend setting colorimetry to "Default RGB" or "sRGB"? Would they be supported? By default it only checkmarks the first two xvYCC and BT2020RGB, there is no checkmarks for the Default RGB or sRGB. Should I enable them and uncheck the others to force the monitor to run 8-bit RGB full?

That doesn't matter. The colorimetry color spaces have nothing to do with the output color format, and I'm not sure Windows even uses the colorimetry information. Just make sure the YCbCr 4:4:4/4:2:2 color formats are disabled if you only want RGB.

Appreciate the fast responses. I ended up reset-all defaulting my monitor because i changed wayyy too many things and it looked very off. Currently at default CRU and just ended up making a custom resolution. My display resolution is 143.981hz in windows. I went into nvidia control panel and I made a custom resolution to add the same res (1920x1080), selected manual timings instead of automatic and i raised the refresh rate to 144.001. Created the custom res and everything looks smooth with no noise and full RGB colors. I noticed after creating this res, my windows displays the refresh rate at PURE 144hz now instead of the old 143.981. I'm guessing this is where nvidia overrid it, hence why things look and run great.

Is it ok to have windows show 1920x1080 @ 144hz from my old 143.981? How important is it for the pixel clock rounding to happen? Seeing as I basically canceled it I'm a little curious lol

[ToastyX]

(12-06-2023 03:53 PM)jeffeh12133 Wrote:  Is it ok to have windows show 1920x1080 @ 144hz from my old 143.981? How important is it for the pixel clock rounding to happen? Seeing as I basically canceled it I'm a little curious lol

It's not important.

[ToastyX]

(12-06-2023 03:45 PM)pcwizard7 Wrote:  Could you point me to an EDID file that's unlocks everything and optimized for a 55in LG CX? I mainly want to solve screen flickering on and off randomly on PCs.
From what I read online it might have to do with either Gsync or VRR but unsure

I don't know what you're asking for. You shouldn't need to change anything in the EDID. Flickering on/off is often a signal quality issue. Make sure you have a certified 48 Gbps cable.