Monitor Tests Forum

Full Version: Custom Resolution Utility (CRU)
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(03-11-2019 11:47 PM)MarioBross007 Wrote: [ -> ]but at the background of the massage it worked well with 75Hz but after 20 seconds my monitor going blank

Please I Need Your Help :')
I can't do anything about that. Your monitor doesn't want to allow the resolution.
(03-10-2019 10:31 PM)NoTechi Wrote: [ -> ]1. just having one resolution in Windows after turning the pc on and to fall back to that resolution when a different resolution was used (e.g. by an game or Netflix). Not sure if cru is of help for this but can‘t get worse than how windows is behaving atm
The graphics driver automatically adds common lower resolutions as scaled resolutions, but CRU can remove all the non-scaled resolutions and make sure only the refresh rates you want are available.


(03-10-2019 10:31 PM)NoTechi Wrote: [ -> ]I now wanted to test some resolutions with madvr custom modes to use the values for cru. Problem now is that in madvr the custom modes tab is there for a second and then dissapears.

My questions:
1. What should I do to get madvr custom modes tab back or is there another way to figure out settings which would result in a higher estimated time of dropped frames in madvr?
That sounds like a bug in madVR. I have a pixel clock calculator that gives you the totals needed to make slight adjustments, but you'll need to figure out which direction you need to go: https://www.monitortests.com/pixelclock....=24&rate=1


(03-10-2019 10:31 PM)NoTechi Wrote: [ -> ]2. Before I did what I described above and at the time I still had the madvr custom mode settings I tried to add a detailed manually with the settings from madvr in cru. Even though the mode was successfully tested in madvr I was not able to add the numbers with cru. Cru showed the 1276 in horizontal front porch in red and the ok button was disabled. Question is why and is there a way to create it anyhow?
EDID detailed resolutions don't allow horizontal front porches that high. Either swap the front and back porches (the blanking/total is what's important), or add a DisplayID extension block, which allows detailed resolutions with higher limits.


(03-10-2019 10:31 PM)NoTechi Wrote: [ -> ]3. Somtimes I got that the marantz EDID was not read correctly (at least thats what I am assuming) which results in not having all resolutions available in nvidia drivers (like no 4k) and windows sound can‘t be set to Atmos anymore. At least the nvidia problem is often solved with a reboot but enabling atmos in windows does not work for some time now (even though it is there to be selected but it does not stick. Since I still get atmos in movies I am not too worried about that it‘s more a principle thing Smile) Any ideas what I could do to ensure windows is receiving the correct information from my marantz (beside placing a hardware edid faker between pc and avr)
That seems like a hardware flaw. I don't know a way around that.
i see how to set up 1920 x 820 / 30hz and 60hz and 3840 x 1634 / 30hz and 60hz, but i don't know how to fill out the rest of the fields, are there default settings for these fields or someplace i can find the info? thanks very much!
(03-12-2019 05:15 PM)aeneas1 Wrote: [ -> ]i see how to set up 1920 x 820 / 30hz and 60hz and 3840 x 1634 / 30hz and 60hz, but i don't know how to fill out the rest of the fields, are there default settings for these fields or someplace i can find the info? thanks very much!
Use the "LCD standard" timing option to fill in the values. The values themselves don't matter much as long as they aren't too low. The original purpose was to give the electron gun time to move between lines/frames on a CRT monitor. That's not as important with digital monitors, but most still need some time for processing. Standards exist to make sure certain values always work, but that only applies to resolutions the monitor officially supports. When adding custom resolutions, there's no guarantee the monitor will accept the resolution or any particular timing parameters. If the monitor can't handle those resolutions, you can use GPU scaling. With GPU scaling, the timing parameters don't matter since the GPU will scale the resolutions to the native resolution.
Thanks ToastyX I will try the cloak calculator approach Smile

NoTechi
Hello Toasty,

I'm really impressed with the support that you've given over so many years.

I have a problem that has led me to this thread - I've just upgraded all my hardware except for my old Apple Cinema Display 30" which has a native res of 2560x1600 and that I've been using on 1920x1200 for the past couple of years. For reasons that remain a mystery to me, the new system is using a res of 1280x800 and I can't seem to get it any higher.

I'm connecting the display via a DVI (dual link) to DisplayPort adapter to my RTX2080, and I've updated my drivers for the card which I initially thought would solve the problem.

I've managed to set-up a new profile in CRU, pressed OK, reset.exe, went to display settings and selected the new resolution, the display goes black for a few seconds during which time the power button on the display flashes intermittently as if it is working, when the picture reappears it defaults back to 1280x800.

Can you shed any light on this?

https://imgur.com/a/5ZtCtIX
(03-13-2019 08:41 PM)Beagle Wrote: [ -> ]I have a problem that has led me to this thread - I've just upgraded all my hardware except for my old Apple Cinema Display 30" which has a native res of 2560x1600 and that I've been using on 1920x1200 for the past couple of years. For reasons that remain a mystery to me, the new system is using a res of 1280x800 and I can't seem to get it any higher.

I'm connecting the display via a DVI (dual link) to DisplayPort adapter to my RTX2080, and I've updated my drivers for the card which I initially thought would solve the problem.

I've managed to set-up a new profile in CRU, pressed OK, reset.exe, went to display settings and selected the new resolution, the display goes black for a few seconds during which time the power button on the display flashes intermittently as if it is working, when the picture reappears it defaults back to 1280x800.
It sounds like you have a single-link DVI adapter, not dual-link. A dual-link DVI adapter would have a USB connection for power like this: https://www.amazon.com/dp/B00856WJH8/?tag=mtests-20#ad

The 30" Apple also doesn't have a scaler, so it only supports 2560x1600 and 1280x800 natively. The graphics driver automatically adds some common lower resolutions as scaled resolutions, which is how you had 1920x1200 before, but without 2560x1600 available, it only adds resolutions lower than 1280x800. When you add 1920x1200 with CRU, you're adding a non-scaled resolution that's sent to the monitor, but the monitor doesn't support 1920x1200, so you get a black screen. You need to get a proper dual-link DVI adapter. Then 1920x1200 will probably be available automatically without needing to use CRU.
Thanks for the quick reply.

Oh I see. From what I understood the difference between a single and dual link DVI connection was the amount of pins found on the connector. I hadn't come across the solution you're suggesting in my initial research for adapting my monitor.

If I were to purchase this adapter, would I be able to scale to a resolution of 2048x1280 ? (according to an online calculator is a scale of 2560x1600) or would my only two res options be 2560x1600 and 1280x800?
(03-14-2019 09:28 AM)Beagle Wrote: [ -> ]If I were to purchase this adapter, would I be able to scale to a resolution of 2048x1280 ?
Yes. You can enable GPU scaling to add lower resolutions with CRU. Just make sure to leave 2560x1600 as the first detailed resolution because GPU scaling will scale to that resolution.
(03-14-2019 01:06 PM)ToastyX Wrote: [ -> ]
(03-14-2019 09:28 AM)Beagle Wrote: [ -> ]If I were to purchase this adapter, would I be able to scale to a resolution of 2048x1280 ?
Yes. You can enable GPU scaling to add lower resolutions with CRU. Just make sure to leave 2560x1600 as the first detailed resolution because GPU scaling will scale to that resolution.

Noted, thanks. I'll purchase this and we'll see how it goes!
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