Custom Resolution Utility (CRU)

[ToastyX]

(09-19-2024 02:34 AM)juanme555 Wrote:  I am not sure, right now im on my i3 9100 iGPU running my CRT Monitor with an HDMI to VGA adapter, it does 1920x1200i 90hz perfectly , i am looking to buy a dedicated gpu and i need interlaced and i would prefer to avoid gpu passthrough, i am between the choice of a Vega 56, Vega 64, Radeon VII or GTX 1070/1080 , i want to play cyberpunk with interlaced scan, cyberpunk needs the latest drivers, i have been reading online a bunch of contradicting anecdotes between may and today...a lot of users say interlaced is super broken on windows on Vega on the latest drivers, some say that in some 2023 drivers interlacing works on nvidia, some people say interlacing never worked at all on Vega and VII.

I feel like im going insane and i just wish someone who had these gpus could test it in real time and give me one certain answer for good.

I have a GTX 1070. I just tested again with the latest driver, 561.09. Interlaced works with HDMI as long as the progressive version also exists. I was able to add 1920x1200i @ 90 Hz as long as I also add 1920x1200p @ 90 Hz (can be standard or detailed resolution). I don't have a CRT monitor, but my LCD monitor accepts interlaced resolutions, and it reports the correct kHz for the interlaced version in the OSD. If I don't add the progressive version, NVIDIA control panel lists the resolution, but setting it does nothing, and the interlaced refresh rate isn't listed in the Windows display settings. Maybe that's where the confusion is coming from. NVIDIA must have broken something at some point. This is with Windows 10.

I don't have a Vega 56/64 or Radeon VII, but I have an AMD Ryzen laptop with integrated Vega 8 GPU, which is also GCN 5.0. I wasn't able to get interlaced resolutions to show up at all with the latest Vega driver, 24.3.1. I don't know if this is because it's a laptop or if an older driver would work. I saw someone mention interlaced working on a Vega 56, but that was a couple of years ago.

[juanme555]

(09-19-2024 09:37 PM)ToastyX Wrote:  

(09-19-2024 02:34 AM)juanme555 Wrote:  I am not sure, right now im on my i3 9100 iGPU running my CRT Monitor with an HDMI to VGA adapter, it does 1920x1200i 90hz perfectly , i am looking to buy a dedicated gpu and i need interlaced and i would prefer to avoid gpu passthrough, i am between the choice of a Vega 56, Vega 64, Radeon VII or GTX 1070/1080 , i want to play cyberpunk with interlaced scan, cyberpunk needs the latest drivers, i have been reading online a bunch of contradicting anecdotes between may and today...a lot of users say interlaced is super broken on windows on Vega on the latest drivers, some say that in some 2023 drivers interlacing works on nvidia, some people say interlacing never worked at all on Vega and VII.

I feel like im going insane and i just wish someone who had these gpus could test it in real time and give me one certain answer for good.

I have a GTX 1070. I just tested again with the latest driver, 561.09. Interlaced works with HDMI as long as the progressive version also exists. I was able to add 1920x1200i @ 90 Hz as long as I also add 1920x1200p @ 90 Hz (can be standard or detailed resolution). I don't have a CRT monitor, but my LCD monitor accepts interlaced resolutions, and it reports the correct kHz for the interlaced version in the OSD. If I don't add the progressive version, NVIDIA control panel lists the resolution, but setting it does nothing, and the interlaced refresh rate isn't listed in the Windows display settings. Maybe that's where the confusion is coming from. NVIDIA must have broken something at some point. This is with Windows 10.

I don't have a Vega 56/64 or Radeon VII, but I have an AMD Ryzen laptop with integrated Vega 8 GPU, which is also GCN 5.0. I wasn't able to get interlaced resolutions to show up at all with the latest Vega driver, 24.3.1. I don't know if this is because it's a laptop or if an older driver would work. I saw someone mention interlaced working on a Vega 56, but that was a couple of years ago.

Well this sucks, it looks like im going with a pascal gpu, i really wanted an AMD gpu because i wanted to get into linux and i was told that nvidia doesnt work well on linux.

Thank you so much for taking the time and giving me one concrete answer on the nvidia side, at least now i know for good that the latest nvidia drivers (as of 19 of September 2024) will do interlacing.

[ikonomov]

My monitor (Asus XG27UCG) supports 4k at 160Hz, but it seems only when DSC is enabled even when I connect it to my RTX 3070 using HDMI 2.1 cable (Zeskit X-Tech 6.5ft). The GPU, monitor and cable should all support 48Gbps to allow 4k at 160Hz and 8bit with CVT-RBv2 and even CVT-RB timings without DSC. Nvidia CRU doesn't allow me to add or set any custom resolutions and any attempts using the ToastyX CRU have been unsuccessful. I understand that this can only be done by adding DisplayID extension block. When I disable DSC in the monitor's OSD I don't even understand how I can set the refresh rate to 144Hz over HDMI 2.1 since 120Hz is the highest one listed in the TV resolutions. Does anybody know if it's possible to create a custom resolution of 3840x2160/160Hz/8bit that I can force the monitor to use when DSC is disabled and if so exactly what settings I need to change in the ToastyX CRU to allow me to do this.

       

[ToastyX]

(09-20-2024 09:40 PM)ikonomov Wrote:  My monitor (Asus XG27UCG) supports 4k at 160Hz, but it seems only when DSC is enabled even when I connect it to my RTX 3070 using HDMI 2.1 cable (Zeskit X-Tech 6.5ft). The GPU, monitor and cable should all support 48Gbps to allow 4k at 160Hz and 8bit with CVT-RBv2 and even CVT-RB timings without DSC. Nvidia CRU doesn't allow me to add or set any custom resolutions and any attempts using the ToastyX CRU have been unsuccessful. I understand that this can only be done by adding DisplayID extension block. When I disable DSC in the monitor's OSD I don't even understand how I can set the refresh rate to 144Hz over HDMI 2.1 since 120Hz is the highest one listed in the TV resolutions. Does anybody know if it's possible to create a custom resolution of 3840x2160/160Hz/8bit that I can force the monitor to use when DSC is disabled and if so exactly what settings I need to change in the ToastyX CRU to allow me to do this.

You can add it in a DisplayID extension block, as you said. 144 Hz might be in a hidden extension block that CRU doesn't support yet, but that doesn't matter since you can add it manually along with 160 Hz. NVIDIA's driver will only allow EDID overrides with DSC disabled, and the monitor might not accept 160 Hz with DSC disabled. Check the FRL rate in the HDMI 2.1 data block and make sure it's 48 Gbps.

[ikonomov]

(09-21-2024 03:03 AM)ToastyX Wrote:  You can add it in a DisplayID extension block, as you said. 144 Hz might be in a hidden extension block that CRU doesn't support yet, but that doesn't matter since you can add it manually along with 160 Hz. NVIDIA's driver will only allow EDID overrides with DSC disabled, and the monitor might not accept 160 Hz with DSC disabled. Check the FRL rate in the HDMI 2.1 data block and make sure it's 48 Gbps.

All my testing has been with DSC disabled which the monitor allows me to do in the OSD. HDMI 2.1 max FRL rate shows as 48 Gbps. After adding 4k/160Hz in a DisplayID 1.3 extension block (with CVT-RB timing) and running restart.exe (same with rebooting the computer) the selectable max refresh rate in NVCP drops from 144Hz to 120Hz, so not only is 160Hz not being added, but the 144Hz is actually being removed. I tried adding 144Hz in the same DisplayID extension block just to test, but it's still not being added and the max shows as 120Hz.

Thank you for your help.

               

[ToastyX]

(09-21-2024 03:53 AM)ikonomov Wrote:  All my testing has been with DSC disabled which the monitor allows me to do in the OSD. HDMI 2.1 max FRL rate shows as 48 Gbps. After adding 4k/160Hz in a DisplayID 1.3 extension block (with CVT-RB timing) and running restart.exe (same with rebooting the computer) the selectable max refresh rate in NVCP drops from 144Hz to 120Hz, so not only is 160Hz not being added, but the 144Hz is actually being removed. I tried adding 144Hz in the same DisplayID extension block just to test, but it's still not being added and the max shows as 120Hz.

Try deleting the extension override data block. 144 Hz will be removed because the hidden extension block is not included, but you should be able to add 144 Hz back in.

[ikonomov]

(09-21-2024 04:24 AM)ToastyX Wrote:  Try deleting the extension override data block. 144 Hz will be removed because the hidden extension block is not included, but you should be able to add 144 Hz back in.

After deleting the extension override data block the 144Hz now shows in NVCP as before. Unfortunately 160Hz still doesn't show. My assumption has been that I can force a given resolution and refresh rate. Since 4k/160Hz/8bit needs less than 48 Gbps with CVT-RBv2 and CVT-RB timings I thought that it would be at least possible to test and see how the monitor would handle it. It's interesting that a few 4k 160Hz monitors with full bandwidth HDMI 2.1 have been released now and all of them that do not have DSC support over HDMI seem to have a 144Hz limit for HDMI 2.1 connections. Any explanation for this would be greatly appreciated. Thank you.

[ToastyX]

(09-21-2024 05:00 AM)ikonomov Wrote:  After deleting the extension override data block the 144Hz now shows in NVCP as before. Unfortunately 160Hz still doesn't show. My assumption has been that I can force a given resolution and refresh rate. Since 4k/160Hz/8bit needs less than 48 Gbps with CVT-RBv2 and CVT-RB timings I thought that it would be at least possible to test and see how the monitor would handle it. It's interesting that a few 4k 160Hz monitors with full bandwidth HDMI 2.1 have been released now and all of them that do not have DSC support over HDMI seem to have a 144Hz limit for HDMI 2.1 connections. Any explanation for this would be greatly appreciated. Thank you.

You should be able to. Either the monitor is not actually 48 Gbps, or there's some limitation on NVIDIA's end with EDID overrides. Did you try CVT-RB2? 160 Hz with CVT-RB exceeds 40 Gbps but CVT-RB2 should fit within 40 Gbps. "Exact" would be even lower in this case. What about with NVIDIA control panel custom resolutions?

[ikonomov]

(09-21-2024 02:07 PM)ToastyX Wrote:  You should be able to. Either the monitor is not actually 48 Gbps, or there's some limitation on NVIDIA's end with EDID overrides. Did you try CVT-RB2? 160 Hz with CVT-RB exceeds 40 Gbps but CVT-RB2 should fit within 40 Gbps. "Exact" would be even lower in this case. What about with NVIDIA control panel custom resolutions?

I've tried both with CVT-RB and CVT-RB2. The problem is that for some reason the newly added 4k 160Hz resolution isn't even being added to NVCP (or display settings in win 10). I was able to add the 144Hz with your suggestion, however, so I wonder why 144Hz was added but not 160Hz. NVCP doesn't allow adding a custom 4k resolution with 160Hz. The test passes but clicking on Save doesn't add the custom resolution to the list. It looks as if something is preventing EDID overrides above 144Hz at 4k or perhaps any resolutions that exceed that frequency at 4k are being ignored. Judging by reviews of other 4k 160Hz monitors it appears that they share the same limitation. For example LG 27GP950-B https://www.rtings.com/monitor/reviews/lg/27gp950-b or Cooler GP27U https://www.rtings.com/monitor/reviews/c...pest-gp27u only support 4k at 144Hz using their 48Gbps HDMI 2.1 connection but can go up to 160Hz using DP 1.4 and DSC. It begs the question where this limitation comes from since 4k/160Hz/8bit using CVT-RB2 timings should be well below 48Gbps. In fact using lower timings even 10bit should be possible.

[ToastyX]

(09-21-2024 02:50 PM)ikonomov Wrote:  I've tried both with CVT-RB and CVT-RB2. The problem is that for some reason the newly added 4k 160Hz resolution isn't even being added to NVCP (or display settings in win 10). I was able to add the 144Hz with your suggestion, however, so I wonder why 144Hz was added but not 160Hz. NVCP doesn't allow adding a custom 4k resolution with 160Hz. The test passes but clicking on Save doesn't add the custom resolution to the list. It looks as if something is preventing EDID overrides above 144Hz at 4k or perhaps any resolutions that exceed that frequency at 4k are being ignored. Judging by reviews of other 4k 160Hz monitors it appears that they share the same limitation. For example LG 27GP950-B https://www.rtings.com/monitor/reviews/lg/27gp950-b or Cooler GP27U https://www.rtings.com/monitor/reviews/c...pest-gp27u only support 4k at 144Hz using their 48Gbps HDMI 2.1 connection but can go up to 160Hz using DP 1.4 and DSC. It begs the question where this limitation comes from since 4k/160Hz/8bit using CVT-RB2 timings should be well below 48Gbps. In fact using lower timings even 10bit should be possible.

What about refresh rates other than 144 Hz? Try 140 Hz to verify if it's allowing EDID overrides. If that works, try between 144-160 Hz.