Monitor Tests Forum

(04-05-2017 05:47 AM)stiepko Wrote: [ -> ]

(04-05-2017 02:36 AM)jestercore Wrote: [ -> ]AMD fixed EDID overwrites in latest beta 17.4.1 driver. Tried just yet. Congrats!

I can confirm this

Me too
Working as intended..

(04-04-2017 11:02 PM)ToastyX Wrote: [ -> ]How was that done?

Bad news - the user on AVSforum/NeoGAF now says that they were wrong and that 120Hz input does not work at 3840x2160 on the C7 OLED.

Hello ToastyX,

Thank you for your tools, really appreciate!

I've a question: Is this working for NVidia Surround?

I've 3 identical monitors, Asus VS247H-P, connected to my Asus Strix GTX 1070 through 2 DP + 1 DVI cables.

I've found some posts from the past stating it wasn't possible to be done for Surround, but couldn't find anything more recent. Is it doable?

Cheers!

(04-06-2017 02:13 AM)Jeef Wrote: [ -> ]I've a question: Is this working for NVidia Surround?

I've 3 identical monitors, Asus VS247H-P, connected to my Asus Strix GTX 1070 through 2 DP + 1 DVI cables.

I've found some posts from the past stating it wasn't possible to be done for Surround, but couldn't find anything more recent. Is it doable?

People have reported mixed results. It's supposed to work, but sometimes the settings don't apply after rebooting because of driver bugs. Using the keyboard shortcuts to toggle between single/extended mode after rebooting might work around the problem.

To use CRU with Surround, you have to configure each monitor individually, then restart and configure Surround.

(04-05-2017 09:08 AM)zeroyon04 Wrote: [ -> ]Is there any way to use CRU to "trick" my computer and monitor into thinking I am using DVI dual-link, although I am using HDMI 1.4a?

My screen keeps flashing a large message box in the center, that says
"Incorrect cable. Please use the dual link DVI cable that came with your monitor."
even if I successfully overclock using HDMI.

No because that happens when the monitor receives a single-link DVI signal greater than 165 MHz pixel clock, and HDMI ports can only transmit single-link signals. If that's happening on the monitor's HDMI port with the HDMI support data block included, then whoever designed the monitor's firmware got lazy and just applied the same logic to HDMI. You shouldn't need the patch with the HDMI support data block included.

Hi
I have Windows 10 (x64), ATI Mobility 5450 (Radeon Software Crimson Edition 16.2.1 Beta), cable (HDMI-DVI) and Dell 1908FP (Digital). Monitor’s max resolution is 1280x1024 (5:4). I use your CRU with AMD/ATI Pixel Clock Patcher and everything works excellent but there is one problem. When I had Windows 7 the problem did not exist.

I can set different resolutions in Catalyst Control Centre and switch them on. 1280x720 is right aspect ratio 16:9 on the monitor [Fig.1]. All others 960x540, 800x450… are 16:9 as well. I can choose 1280x1024 (the aspect ratio changes good 5:4, 800x600, 1024x768... 4:3) be back to 1280x720 and the aspect is true every time. The GPU keeps ON and all goes automatically. It is also fine when I use system’s Windows Display Resolutions [Fig.2].

The problem occurs using Video Card Properties. Choosing 1280x720 stretches the screen to 5:4 [Fig.3]. Crimson shows “Full Panel”. Of course I can take “Keep Aspect Ratio” but switching to 1280x1024 and back to 1280x720 stretches the display again. It is interesting that apart from 1280x720 switching all other resolutions is perfect with proper auto aspect.

It is awful with 1280x720 games. I have noticed that part of them gets driver resolutions, other part uses windows resolutions and the rest takes the stretched one. Is there any fix?!?

Thank you for your utility, best regards.

When I set monitor frequency to 59.951 and pixel clock 154.002 cru rounds to 59.954 and pixel cloack 154.01. Can you add support for more decimals?

(04-08-2017 05:54 PM)dmr Wrote: [ -> ]When I set monitor frequency to 59.951 and pixel clock 154.002 cru rounds to 59.954 and pixel cloack 154.01. Can you add support for more decimals?

This is not a limitation of CRU, it´s a Windows/driver limitation. There´s no workaround for that. The limitation is 2 decimal places for the pixel clock. The refresh rate has no limitation, it is a calculated value from horizontal / vertical totals and the pixel clock: refresh rate = pixelclock / (horizontal total * vertical total). So CRU firstly rounds the pixel clock to 2 decimal places and then calculates the refresh rate when entering numbers.

But in nvidia control panel, when creating custom resolution, I can set frequency to 59.951 and get pixel clock at 154.002 and horizontal refresh rate 74.04

EDIT:BTW this frequency is default with AMD GPUs, I check in powerstrip on 280x and 59.951 is default one. But after installing nvidia GTX1070 frequency goes to 59.950 and pixel cloack slightly under 154 (something like 153.99x). I notice that picture is better on 59.951 and pixel cloack 154.002 but can't set on nvidia. Like I said before I can set custom resolution with 59.951 and pixel clock at 154.002 in nvidia control panel but when go to game and back to desktop frequency goes back. So I tried CRU but can't setup 59.951Hz and pixel clock at 154.002, it rounds to 59.954 and pixel cloack 154.01

(04-08-2017 05:54 PM)dmr Wrote: [ -> ]When I set monitor frequency to 59.951 and pixel clock 154.002 cru rounds to 59.954 and pixel cloack 154.01. Can you add support for more decimals?

This is an EDID limitation. Detailed resolutions only have two decimal places. Use this to calculate the totals required for specific refresh rates: https://www.monitortests.com/pixelclock.php

(04-09-2017 11:14 AM)dmr Wrote: [ -> ]But in nvidia control panel, when creating custom resolution, I can set frequency to 59.951 and get pixel clock at 154.002 and horizontal refresh rate 74.04

EDIT:BTW this frequency is default with AMD GPUs, I check in powerstrip on 280x and 59.951 is default one. But after installing nvidia GTX1070 frequency goes to 59.950 and pixel cloack slightly under 154 (something like 153.99x). I notice that picture is better on 59.951 and pixel cloack 154.002 but can't set on nvidia. Like I said before I can set custom resolution with 59.951 and pixel clock at 154.002 in nvidia control panel but when go to game and back to desktop frequency goes back. So I tried CRU but can't setup 59.951Hz and pixel clock at 154.002, it rounds to 59.954 and pixel cloack 154.01

You didn't say you were having a picture problem. Based on the frequencies, I assume you're talking about a 1920x1200 @ 60 Hz monitor. If that's the case, the default pixel clock is supposed to be 154 MHz, but hardware variances can cause slight differences. Such a small difference wouldn't affect the picture.

What monitor is this? Are you using DVI or HDMI? What is the exact problem you're having with the picture and what changes do you see with the NVIDIA custom resolution?