Custom Resolution Utility (CRU)

[y.c]

(11-28-2024 11:08 PM)ToastyX Wrote:  

(11-28-2024 10:02 PM)y.c Wrote:  Hello everyone,
I need your help with the following case.
My RX 7900 xt permanently clocks the VRAM boost at 2487 MHz.
I've already played around with cru, but I don't understand everything yet, so I just wanted to ask here if anyone knows the optimal settings for my monitor configuration.

1. Monitor: 3840x2160 144hz (Gigabyte M32U)
2. Monitor: 3440x1440 100hz (HP M34D)
3. Monitor: 1920x1080 75hz (ACER QG271)

I've already played around with the Hz numbers and the resolutions, but unfortunately I haven't been able to find the optimal settings.
I've already increased the blanking time a little, but I wasn't sure how high I could go. If anyone has an idea how I can reduce my VRAM clock speed, I would be very grateful.
All three monitors are needed, ideally with the appropriate resolution, theoretically I would only need the maximum Hz number on monitor 1.

The blanking periods must be synchronized on all three monitors to be able to change the VRAM clock. There's no way to synchronize the monitors with three different resolutions and three different refresh rates unless all the monitors support some form of variable refresh rate (M34d doesn't). This would happen on NVIDIA as well.

thx for your fast answer.
that means, i can change the HP Monitor with an other monitor with Freesync?
Resolution and Hz is pointless then?

Should it be fixed then?

[ToastyX]

(12-02-2024 08:37 PM)y.c Wrote:  thx for your fast answer.
that means, i can change the HP Monitor with an other monitor with Freesync?
Resolution and Hz is pointless then?

Should it be fixed then?

I can't guarantee that. It depends on how AMD implemented the VRAM clock switching. In theory it should work if all the monitors support FreeSync/VRR because the GPU can synchronize the blanking periods that way. You can try disconnecting the HP monitor and see if it works with just the Gigabyte and Acer monitors connected.

[lyndonguitar]

Hello, I am trying to create a shortcut for CRU's restart64.exe via Stream Deck. It works good, but for the prompt window that appears after "Graphics Driver Restarted, Restart Again, Recovery Mode, F8), can it be disabled? is there a command prompt switch perhaps to be made on a bat file so it won't appear?

[korisnik2007a]

Heya, registered here to make this post specifically.

First of all, thanks for this amazing utility! I've however encountered a weird issue with it:

I have a 3060Ti, using 1 Display Port to connect to my main PC screen (LC Power M25-FHD-144, 144Hz per spec), and using the HDMI port for my second screen (HP 23CW, 60Hz per spec). Currently on Windows 10 22H2 with nvidia 552.44 drivers. Using your tool allowed (and still does) me to use my main PC screen @240Hz and 10-bit mode, and everything works fine, gsync and all. However, when I use CRU to make any kind of adjustments to my settings, and I try to reboot my pc my screen goes blank and the system is not responsive, I have to restart it.

I have noticed that if I physically unplug my second display (the HDMI HP one), the problem goes away and everything works fine. I've tried different driver versions (newer ones), and they all acted the same.

So overall, it all works until I try to restart my PC, at which point it can't properly boot into windows for whatever reason (it does work on the 2nd boot, power off and on via the power button), but works fine if I disconnect the 2nd display. It also works fine if I add the custom refresh rate via nVidia control panel, but I cannot set 10-bit without using CRU, at which point I get the same issue.

I've tried to troubleshoot myself, using CRU only to add 240Hz, or only to add 10-bit, but it would not reboot properly either way. If I use nVidia and set 240Hz 8-bit, it reboots fine. If I unplug my 2nd display it also reboots fine.

I hope I got my point across and that there's something simple I'm just overlooking. Thanks!

[ToastyX]

(12-05-2024 09:13 PM)korisnik2007a Wrote:  However, when I use CRU to make any kind of adjustments to my settings, and I try to reboot my pc my screen goes blank and the system is not responsive, I have to restart it.

I have noticed that if I physically unplug my second display (the HDMI HP one), the problem goes away and everything works fine. I've tried different driver versions (newer ones), and they all acted the same.

It's an NVIDIA driver bug. Their driver is hanging on boot when an EDID override is present with multiple displays connected, but it doesn't always happen. You should report the issue to NVIDIA.

[ToastyX]

(12-05-2024 05:07 PM)lyndonguitar Wrote:  Hello, I am trying to create a shortcut for CRU's restart64.exe via Stream Deck. It works good, but for the prompt window that appears after "Graphics Driver Restarted, Restart Again, Recovery Mode, F8), can it be disabled? is there a command prompt switch perhaps to be made on a bat file so it won't appear?

It's in the first post:

(09-07-2012 09:06 PM)ToastyX Wrote:  

• restart.exe/restart64.exe:
  • /q - Restart without prompting (or rename the file to restart-only.exe)
  • /r - Activate recovery mode without prompting
    

[korisnik2007a]

(12-05-2024 10:09 PM)ToastyX Wrote:  

(12-05-2024 09:13 PM)korisnik2007a Wrote:  However, when I use CRU to make any kind of adjustments to my settings, and I try to reboot my pc my screen goes blank and the system is not responsive, I have to restart it.

I have noticed that if I physically unplug my second display (the HDMI HP one), the problem goes away and everything works fine. I've tried different driver versions (newer ones), and they all acted the same.

It's an NVIDIA driver bug. Their driver is hanging on boot when an EDID override is present with multiple displays connected, but it doesn't always happen. You should report the issue to NVIDIA.

Thank you for replying! I'll try to report it to them. Once again thanks for the app!

[LoveTilapia]

Hello friends,

I am trying to test if my cable is good quality. I am on an AMD 7900xt. If I set CRU to the following settings, will this properly disable DSC and run the full 3840x2160 144hz 10bit @ 40gigabit to my display? Is there some way to check if DSC is running on AMD ?

I know my display can handle the 48gbit on hdmi 2.1.

[ToastyX]

(12-11-2024 02:31 AM)LoveTilapia Wrote:  Hello friends,

I am trying to test if my cable is good quality. I am on an AMD 7900xt. If I set CRU to the following settings, will this properly disable DSC and run the full 3840x2160 144hz 10bit @ 40gigabit to my display? Is there some way to check if DSC is running on AMD ?

I know my display can handle the 48gbit on hdmi 2.1.

Delete the max chunk total as well. That should disable DSC, but I don't know how AMD handles DSC since I don't have the hardware myself. I don't know a way to get the DSC status either.

[LoveTilapia]

(12-12-2024 12:55 AM)ToastyX Wrote:  Delete the max chunk total as well. That should disable DSC, but I don't know how AMD handles DSC since I don't have the hardware myself. I don't know a way to get the DSC status either.

Thanks ToastyX

How do people normally check for DSC?