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***ToastyX*** · Yesterday, 04:27 PM

(12-11-2025 04:53 PM)marcosxsilva Wrote: I have attached some screenshots. Did I miss something or something wrong?

No, that should work. The TMDS clock should be 340 MHz for 60 Hz to work, but that wouldn't affect 56 Hz. Seems like it's actually limited to 165 MHz pixel clock because you should at least have 2560x1080 by default if it was the 300.99 MHz limit, so something isn't right with the driver. You should report this to Intel support.

Petrushka · (Last edited: Yesterday, 05:00 PM by Petrushka)

Hi! Thanks so much for this Utility!

I have been trying to get it to work to fix an issue I am getting with multiple older dell monitors. My specs are:

Dell Optiplex 7060 2 x display ports
2 x Dell Dell U2412M connected via Display Ports
Intel UHD 630 with driver 31.0.0101.2114
Windows Pro 11 25H2 OS build 26200.7462

in the last week or so the resolution dropped to 640x480 with no way to get the 1920x1200 back via reboots, driver updates etc. Only thing that worked was to unplug the display port cables and replug them in and all works fine for a while. Then reverts to the 640 x 480 resolution. Monitors are recognized as Generic PNP instead as the the Dell U2412M when the correct resolution is detected after unplugging and plugging the display port cable in.

I tried using the CRU utility but when I restart the new 1920x1200 resolution won't take... any ideas or tips on how to force 1920 x1200 and keep it that way?

Thanks in advance!

***ToastyX*** · Yesterday, 06:48 PM

(Yesterday 04:56 PM)Petrushka Wrote: Hi! Thanks so much for this Utility!

I have been trying to get it to work to fix an issue I am getting with multiple older dell monitors. My specs are:

Dell Optiplex 7060 2 x display ports
2 x Dell Dell U2412M connected via Display Ports
Intel UHD 630 with driver 31.0.0101.2114
Windows Pro 11 25H2 OS build 26200.7462

in the last week or so the resolution dropped to 640x480 with no way to get the 1920x1200 back via reboots, driver updates etc. Only thing that worked was to unplug the display port cables and replug them in and all works fine for a while. Then reverts to the 640 x 480 resolution. Monitors are recognized as Generic PNP instead as the the Dell U2412M when the correct resolution is detected after unplugging and plugging the display port cable in.

I tried using the CRU utility but when I restart the new 1920x1200 resolution won't take... any ideas or tips on how to force 1920 x1200 and keep it that way?

Thanks in advance!

This seems like some sort of DisplayPort handshake issue since it works after reconnecting. I did a search and found several other people experiencing the same issue with the U2412M. One suggested disabling DDC/CI in the monitor's OSD. Another suggested unplugging the monitor's power for a minute to reset the monitors, which would indicate a firmware bug. Another option is to use a DisplayPort to DVI adapter instead to avoid the handshake issues.

Petrushka · Yesterday, 06:54 PM

(Yesterday 06:48 PM)ToastyX Wrote:
(Yesterday 04:56 PM)Petrushka Wrote: Hi! Thanks so much for this Utility!

I have been trying to get it to work to fix an issue I am getting with multiple older dell monitors. My specs are:

Dell Optiplex 7060 2 x display ports
2 x Dell Dell U2412M connected via Display Ports
Intel UHD 630 with driver 31.0.0101.2114
Windows Pro 11 25H2 OS build 26200.7462

in the last week or so the resolution dropped to 640x480 with no way to get the 1920x1200 back via reboots, driver updates etc. Only thing that worked was to unplug the display port cables and replug them in and all works fine for a while. Then reverts to the 640 x 480 resolution. Monitors are recognized as Generic PNP instead as the the Dell U2412M when the correct resolution is detected after unplugging and plugging the display port cable in.

I tried using the CRU utility but when I restart the new 1920x1200 resolution won't take... any ideas or tips on how to force 1920 x1200 and keep it that way?

Thanks in advance!
This seems like some sort of DisplayPort handshake issue since it works after reconnecting. I did a search and found several other people experiencing the same issue with the U2412M. One suggested disabling DDC/CI in the monitor's OSD. Another suggested unplugging the monitor's power for a minute to reset the monitors, which would indicate a firmware bug. Another option is to use a DisplayPort to DVI adapter instead to avoid the handshake issues.

Okay thanks @ToastyX! I did try disabling DDC/CI in the monitor's OSD. Unplugging the monitor's power for a minute to reset the monitors, factory resetting the monitors.

It seems a windows update started the issues as the monitors were working fine for a few months. would the DVI-D adapter bypass any handshake issues?

I was hoping that the CRU utility could force the correct resolution but I guess that is not possible with this bug?

kristianity1977 · Yesterday, 07:54 PM

Really hoping someone can help me out here I'm tearing my hair out in frustration.

Basicailly I'm using a windows 11 PC with a 4090 and its connected to a Samsung 77 inch S95F TV.

The problem is, for one reason or another, my TV will NOT work at 165hz (which windows has as an option to select in Display properties.

I've tried everything on CRU that I can think of using guides etc but that 165 option on my Display setting list just stays the saem no matter what.

This isnt a problem as such, but some programs I use will ALWAYS default to the highest fresh rate possible, regardless of what my PC is set to normally. This is causing certain programs to not even boot because my TV crashes upon this refresh rate switch.

SeriousX · Yesterday, 11:39 PM

Hello! I have some Virtual display plugs (like you used in mining era)
I used to use it for emulating second 1080p screen.

Now im in need of 1440p (2k) screen to emulate and i cant figure out how to do it.

I try to input 2560x1440 in Standart resolutions slot and i cant save it. Numbers of resolution go red and OK is disabled.

What do i do wrong?

***ToastyX*** · Yesterday, 11:54 PM

(Yesterday 11:39 PM)SeriousX Wrote: Hello! I have some Virtual display plugs (like you used in mining era)
I used to use it for emulating second 1080p screen.

Now im in need of 1440p (2k) screen to emulate and i cant figure out how to do it.

I try to input 2560x1440 in Standart resolutions slot and i cant save it. Numbers of resolution go red and OK is disabled.

What do i do wrong?

The first post explains why. Add it as a detailed resolution.

***ToastyX*** · Yesterday, 11:54 PM

(Yesterday 07:54 PM)kristianity1977 Wrote: Really hoping someone can help me out here I'm tearing my hair out in frustration.

Basicailly I'm using a windows 11 PC with a 4090 and its connected to a Samsung 77 inch S95F TV.

The problem is, for one reason or another, my TV will NOT work at 165hz (which windows has as an option to select in Display properties.

I've tried everything on CRU that I can think of using guides etc but that 165 option on my Display setting list just stays the saem no matter what.

This isnt a problem as such, but some programs I use will ALWAYS default to the highest fresh rate possible, regardless of what my PC is set to normally. This is causing certain programs to not even boot because my TV crashes upon this refresh rate switch.

The issue might be related to DSC, or the cable is not good enough. Make sure the firmware is up to date as well.

You can use the RegEdit trick in the first post to disable multiple heads:
Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\#### (usually 0000)
Value: "EnableTiledDisplay"=dword:00000000

Then CRU will work, but you won't need it since that should also disable 165 Hz.

***ToastyX*** · Yesterday, 11:54 PM

(Yesterday 06:54 PM)Petrushka Wrote: Okay thanks @ToastyX! I did try disabling DDC/CI in the monitor's OSD. Unplugging the monitor's power for a minute to reset the monitors, factory resetting the monitors.

It seems a windows update started the issues as the monitors were working fine for a few months. would the DVI-D adapter bypass any handshake issues?

I was hoping that the CRU utility could force the correct resolution but I guess that is not possible with this bug?

CRU might be able to force the correct resolution with Windows 10 but not Windows 11 because Windows 11 ignores EDID overrides if the EDID can't be read. The U2412M doesn't have this issue with DVI, so an adapter should work.