Custom Resolution Utility (CRU)

[ToastyX]

(06-12-2022 09:40 AM)Bertie_bassett Wrote:  That’s awesome thanks, I’ll give it a try. Do you think it will be ok if I take the EDID I attached that I’m currently using, which works perfectly in all other ways, and just add 1920x1080@60hz as the first detailed resolution like you say? Or start again from the original EDIDs?

Your current EDID already has 1920x1080 @ 60 Hz. Just move it up to the first slot.

[Torched]

(06-12-2022 02:02 PM)ToastyX Wrote:  

(06-12-2022 12:35 PM)Torched Wrote:  Hi, Love this project but I'd love it more if i could understand what I'm missing. I have a 3440 x 1440 UWQHD 144hz monitor, I also have an AMD 6900XT. If I set 1920 x 1080 at 260mhz with GPU scaling off Windows thinks my native resolution is 1920 x 1080 but my aspect ratio gets stretched (trying to get it letter boxed with black bars either end). If i turn GPU scaling on the entry doesn't appear in my windows refresh rate list. Coming from NVIDIA I was able to run this no problem using NVIDIA control panel custom resolutions.

GPU scaling off makes the monitor scale, so check if the monitor has any settings to maintain the aspect ratio.
GPU scaling on scales to the native resolution, so the refresh rate needs to be added at the native resolution.

It seems my monitor doesn't have that option AMD needs to fix their driver.

[Bertie_bassett]

(06-12-2022 09:40 AM)Bertie_bassett Wrote:  

(06-11-2022 11:15 PM)ToastyX Wrote:  Try making 1920x1080 @ 60 Hz the first detailed resolution. Then 1920x1080 shouldn't scale to a higher resolution.

That’s awesome thanks, I’ll give it a try. Do you think it will be ok if I take the EDID I attached that I’m currently using, which works perfectly in all other ways, and just add 1920x1080@60hz as the first detailed resolution like you say? Or start again from the original EDIDs?

I’ll let you know how I get on!

IT WORKS!! Sorry for shouting but I can't believe I solved my problem! @ToastyX thank you so much - you are a wonderful human being. I'm so grateful!

[pragmaticmero]

(05-25-2022 08:06 PM)ToastyX Wrote:  

(05-25-2022 07:28 PM)pragmaticmero Wrote:  What's curious is that, now in my Intel Graphics Command Center appears listed as a supported mode, but I still can't change my monitor to 165Hz, why is that? how can I fix it?

That means the driver recognizes the resolution but there's a bandwidth limitation. Are you using HDMI or DisplayPort? HDMI 1.x is limited to 340 MHz pixel clock, and I don't think that monitor has HDMI 2.0. The monitor probably only supports 1920x1080 @ 165 Hz with DisplayPort.

yes haha, sorry for the late response, yep, It's plugged from HDMI, I suppose the bandwidth isn't enough from there, its a cheapo monitor, DisplayPort might do it. Quick and professional response, I'm impressed, keep the good work man.

[marxzoe]

I'm using a headless HDMI dongle to create a virtual Windows desktop in VR. I am now on a quest to increase the size of this desktop to humongous proportions.

I first used CRU to push the HDMI dongle to its maximum pixel clock limit. Then I turned to Nvidia's custom resolution tool to increase this even further by creating custom resolutions that are then scaled down to the monitor resolution.

However, at some point, I am not able to go further. Instead I'm getting the error message from the Nvidia control panel that my monitor does not support the new resolution.

Which I don't understand: isn't the scaling done by the GPU alone? What role does the HDMI dongle's capabilities play? What is the limiting factor here?

[wenbei999]

(06-12-2022 05:21 AM)wenbei999 Wrote:  

(06-11-2022 11:15 PM)ToastyX Wrote:  

(06-11-2022 01:33 AM)wenbei999 Wrote:  However, sometimes when I wake the computer from sleep, the vram clock is again stuck at maximum. The CRU settings were not applied. I can fix this again by going to windows settings, and changing the refresh rate to 60hz and then back to 75hz, WITHOUT using CRU again. Therefore I think the CRU settings are being saved, but not applied automatically.

That can only be a driver bug. The driver is what applies the override. Try creating the custom resolution with AMD's Radeon Software using the CVT-RB timing standard.

Unfortunately it does not work using CVT-RB in AMD Adrenaline, since I cannot specify vertical blanking. I guess you can't do anything if it's an AMD driver issue....

Could this be related to me having the same monitor twice in the drop down? I tried to delete it but it does not work.

Hi ToastyX,

I think I figured it out. I use the same monitor with my work computer and personal computer (separate inputs) and the issue might be caused by the monitor switching inputs. I tested this by turning the monitor off and on again, and it results in the same issue with the CRU settings not applied. The computer was on the whole time so it wasn't actually caused by windows going to sleep.

Is this still an AMD driver issue or is there some way to fix it?

Thanks.

[ToastyX]

(06-15-2022 02:59 AM)wenbei999 Wrote:  

(06-12-2022 05:21 AM)wenbei999 Wrote:  Unfortunately it does not work using CVT-RB in AMD Adrenaline, since I cannot specify vertical blanking. I guess you can't do anything if it's an AMD driver issue....

Could this be related to me having the same monitor twice in the drop down? I tried to delete it but it does not work.

Hi ToastyX,

I think I figured it out. I use the same monitor with my work computer and personal computer (separate inputs) and the issue might be caused by the monitor switching inputs. I tested this by turning the monitor off and on again, and it results in the same issue with the CRU settings not applied. The computer was on the whole time so it wasn't actually caused by windows going to sleep.

Is this still an AMD driver issue or is there some way to fix it?

Thanks.

I haven't heard of EDID overrides not being applied after turning a monitor off and back on, nor should switching refresh rates cause an EDID override to load. Normally EDID overrides take effect when the driver loads or after a monitor is connected, and in rare cases where it doesn't, the driver has to be restarted. Maybe the settings are actually being applied, but there's another issue causing the memory clock to stay at maximum. You could verify this by adding a refresh rate that doesn't exist by default. If the settings aren't taking effect, the refresh rate won't exist. The second monitor entry in CRU is a side effect of restarting the driver and shouldn't have any effect.

As for Adrenalin custom resolutions, CVT-RB should provide enough blanking already, or you can specify the parameters manually. The total includes the blanking.

[ToastyX]

(06-14-2022 11:48 AM)marxzoe Wrote:  I'm using a headless HDMI dongle to create a virtual Windows desktop in VR. I am now on a quest to increase the size of this desktop to humongous proportions.

I first used CRU to push the HDMI dongle to its maximum pixel clock limit. Then I turned to Nvidia's custom resolution tool to increase this even further by creating custom resolutions that are then scaled down to the monitor resolution.

However, at some point, I am not able to go further. Instead I'm getting the error message from the Nvidia control panel that my monitor does not support the new resolution.

Which I don't understand: isn't the scaling done by the GPU alone? What role does the HDMI dongle's capabilities play? What is the limiting factor here?

You'd have to ask NVIDIA about scaling limtations. Maybe the scaler has resolution or bandwidth limitations, or the driver is applying some pixel clock limit when it shouldn't. You might be able to go higher by enabling DSR instead of using NVIDIA's custom resolutions.

[ruisuVL]

Hello!
I'm new to this and have a question: is it possible to display scale with my 360hz monitor? I have the aw2521h and when I try to set up a custom resolution with 360hz the number turns red and I can't click "ok".

[LIGHT]

Hi! Need help! I use Vega 64 Pixel 4.2.0, TV Samsung Q80T(game mod, HDMI 2.1 port, FreeSync) and HDMI 1.4 cable. While using driver version 21.5, it could work in 120hz UHD mode (atikmdag-patcher). After updating the driver to version 21.12.1 - 120hz disappeared from the list - CRU helped. Now I installed the latest drivers 22.5.2 and I can’t run UHD 120hz Freesync - no 120hz setting, atip and CRU dont help.