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***ToastyX*** · 02-15-2020, 03:25 PM

(02-15-2020 07:31 AM)joevt Wrote: CRU should probably rename the timings to GTF, CVT, CVT-RB, CVT-RB2 so we know what standard is being used - 1920x1080 144Hz 346 MHz is CVT-RB

The problem is "LCD standard" uses different standards depending on the resolution, and "LCD native" and "LCD reduced" are not standard, so I can't name them after standards. The original point was to organize them by purpose because most people won't know what standard to choose. I've been wanting to change the timing options for a while, but I've been hesitant because of all the tutorials out there that have the old options. I had already started working on changing the timing options, but I haven't finalized anything yet.

The next version of CRU will probably have these options:

Automatic (PC) - For PC monitors (CEA-861-B/DMT [16:9]/CVT-RB)
Automatic (HDTV) - For HDTVs (CTA-861-G/DMT [16:9]/CVT-RB)
Automatic (CRT) - For CRT monitors (DMT [4:3/5:4]/CVT)
Native (PC) - Uses 60 Hz "PC" timing parameters for all refresh rates
Native (HDTV) - Uses 60 Hz "HDTV" timing parameters for all refresh rates
Exact - Produces exact integer refresh rates
Exact reduced - Same as above with reduced pixel clock for some resolutions
CVT standard
CVT-RB standard
CVT-RB2 standard
GTF standard

joevt · 02-15-2020, 03:37 PM

(02-15-2020 03:24 PM)ToastyX Wrote: I did that because the YCbCr flags do nothing without HDMI support, so it will also unset them if HDMI support is deleted.

Doesn't that depend on the drivers? DisplayPort also supports YCbCr.

***ToastyX*** · 02-15-2020, 03:59 PM

(02-15-2020 03:37 PM)joevt Wrote: Doesn't that depend on the drivers? DisplayPort also supports YCbCr.

No, because DVI and VGA don't support YCbCr, and DisplayPort YCbCr is defined in the base block with EDID 1.4. The next version of CRU will provide a way to edit the DisplayPort YCbCr flags in the display properties.

benoe · 02-15-2020, 07:11 PM

(02-15-2020 07:31 AM)joevt Wrote: HDMI and DisplayPort connections have different EDIDs. Are you looking at the DisplayPort EDID or the HDMI EDID (they might have different product IDs)?
Double-check the EDIDs in Monitor Asset Manager (moninfo.exe).

I have attached the moninfo output with displayport connected.

(02-15-2020 07:31 AM)joevt Wrote: The display is not using a standard timing because it won't fit in the allowed range 330 MHz max (CRU should probably rename the timings to GTF, CVT, CVT-RB, CVT-RB2 so we know what standard is being used - 1920x1080 144Hz 346 MHz is CVT-RB).

If the EDID comes with a 144 Hz timing using 325 MHz, then why are you creating another timing using 346 MHz?

My goal is to make my radeon card lower it's memory clock rate when idle by increasing the vertical blanking lines. This increases pixel clock.

RonBurgundy · 02-15-2020, 08:08 PM

Thank you for your answers about deep color . I have another problem. I had gtx1070 and most of the time I was playing games in 30Hz=30fps or 50Hz=50fps if a game is not that demanding . Recently I bought rtx2070super ,sometimes , some games which are CPU heavy drops some frames to 50fps , so I would like to play them in 50Hz just like before to get that smooth image with a controller . With the new card for some reason 50hz acts like 60hz.
For example :
I made 2560x1440 and 3200x1800 detailed resolution with 50Hz. The problem is when I switch to created detailed res my TV reports that resolution 2560x1440 50hz was applied, but in reality something is not right , I can clearly see when slowly turning camera around that the image is not smooth , it's like 60fps capped to 50fps with a frame limiter or it's like some unusual refresh rate which TV doesn't support, I can clearly see that it's not native refresh rate. This only occurs when I select Display scaling in Nvidia control panel and detailed res, if I switch to GPU scaling the problem is gone ,or if I delete custom res, then 1440p is created out of 2160p native resolution automatically by the driver, the image is smooth in 50fps again. I had no such problems with my old gtx1070. Detail resolution + display scaling gave me the clearest picture .

uVSthem · (Last edited: 02-16-2020, 12:41 AM by uVSthem)

I’m wondering if there is anyway I can use CRU to help me with an issue I am having. My TV supports 4K at 60hz. The resolution of 3840 x 2160 runs at 60hz without any issues. I have GPU scaling turned on in my Nvidia control. For some reason all scaled resolutions only go up to 30Hz. If the GPU is scaling the resolutions to 4k, shouldn’t those support 60hz as well?

Here is a link to the TV.

https://www.vizio.com/m60c3.html

***ToastyX*** · 02-16-2020, 01:20 AM

(02-16-2020 12:37 AM)uVSthem Wrote: I’m wondering if there is anyway I can use CRU to help me with an issue I am having. My TV supports 4K at 60hz. The resolution of 3840 x 2160 runs at 60hz without any issues. I have GPU scaling turned on in my Nvidia control. For some reason all scaled resolutions only go up to 30Hz. If the GPU is scaling the resolutions to 4k, shouldn’t those support 60hz as well?

Here is a link to the TV.

https://www.vizio.com/m60c3.html

That depends on how it's getting 60 Hz. If the connection is HDMI 1.x and 60 Hz is YCbCr 4:2:0, then the GPU might only be scaling to non-4:2:0 refresh rates. If it's HDMI 2.x, then that shouldn't happen. Does CRU show HDMI 2.0 support in the extension block? If not, you might need to use a certain port on the TV (port 5 according to the specs), or you might have to enable some option on the TV to make it HDMI 2.x.

***ToastyX*** · 02-16-2020, 01:24 AM

(02-15-2020 08:08 PM)RonBurgundy Wrote: Thank you for your answers about deep color . I have another problem. I had gtx1070 and most of the time I was playing games in 30Hz=30fps or 50Hz=50fps if a game is not that demanding . Recently I bought rtx2070super ,sometimes , some games which are CPU heavy drops some frames to 50fps , so I would like to play them in 50Hz just like before to get that smooth image with a controller . With the new card for some reason 50hz acts like 60hz.
For example :
I made 2560x1440 and 3200x1800 detailed resolution with 50Hz. The problem is when I switch to created detailed res my TV reports that resolution 2560x1440 50hz was applied, but in reality something is not right , I can clearly see when slowly turning camera around that the image is not smooth , it's like 60fps capped to 50fps with a frame limiter or it's like some unusual refresh rate which TV doesn't support, I can clearly see that it's not native refresh rate. This only occurs when I select Display scaling in Nvidia control panel and detailed res, if I switch to GPU scaling the problem is gone ,or if I delete custom res, then 1440p is created out of 2160p native resolution automatically by the driver, the image is smooth in 50fps again. I had no such problems with my old gtx1070. Detail resolution + display scaling gave me the clearest picture .

That sounds like frame duplication, like if the TV were converting 50 Hz to 60 Hz, but if that were the case, that should happen with both video cards, so I don't know what's going on.

uVSthem · 02-16-2020, 01:58 AM

(02-16-2020 01:20 AM)ToastyX Wrote:
(02-16-2020 12:37 AM)uVSthem Wrote: I’m wondering if there is anyway I can use CRU to help me with an issue I am having. My TV supports 4K at 60hz. The resolution of 3840 x 2160 runs at 60hz without any issues. I have GPU scaling turned on in my Nvidia control. For some reason all scaled resolutions only go up to 30Hz. If the GPU is scaling the resolutions to 4k, shouldn’t those support 60hz as well?

Here is a link to the TV.

https://www.vizio.com/m60c3.html
That depends on how it's getting 60 Hz. If the connection is HDMI 1.x and 60 Hz is YCbCr 4:2:0, then the GPU might only be scaling to non-4:2:0 refresh rates. If it's HDMI 2.x, then that shouldn't happen. Does CRU show HDMI 2.0 support in the extension block? If not, you might need to use a certain port on the TV (port 5 according to the specs), or you might have to enable some option on the TV to make it HDMI 2.x.

HDMI 2.0 support is in the extention. I attached the exported setting and a screen shot of what I am looking at. I'm using port 5 on the TV. The PC is connected to my Onkyo receiver which is HDMI 2.0B and then passes the video to my TV but even when I connect the video card directly to the TV I have the same issue.

***ToastyX*** · 02-16-2020, 02:28 AM

(02-16-2020 01:58 AM)uVSthem Wrote: HDMI 2.0 support is in the extention. I attached the exported setting and a screen shot of what I am looking at. I'm using port 5 on the TV. The PC is connected to my Onkyo receiver which is HDMI 2.0B and then passes the video to my TV but even when I connect the video card directly to the TV I have the same issue.

The EDID you posted doesn't have 3840x2160 @ 60 Hz anywhere except as a 4:2:0 resolution. That's the problem. Add it as a detailed resolution or TV resolution, and remove the 4:2:0 resolutions data block. The TV should have already defined 60 Hz though if it supports HDMI 2.0, so something is amiss.