Custom Resolution Utility (CRU)

[Ambro]

Hi Toasty, I wanted to first thank you for all of your hard work with CRU. I've run into a bit of an issue with my monitor when using CRU and now I'm desperately looking for a way of fixing this issue. I was following a guide for enabling GSYNC on both of my BENQ BNQ7F45 monitors and in the process of doing this, I replicated the timing settings for my first monitor over to my second, which is the same monitor, but a more current iteration (more recent Firmware). Anyhow, I made sure to perform an export from CRU thinking that if I ever needed to revert anything I changed, I could readily do that and since I've made these changes, my second monitor is now locked at 120hz. My primary will do 144hz, without an issue. I've tried using the reset feature of CRU and rebooting, even downloaded and ran DDU to blow out the drivers. Last thing I just tried was running regedit as the system user, and blowing out the two registry keys associated with my monitor in Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\DISPLAY

I rebooted, checked the refresh and it's still locked at 120hz. I'm baffled by this, and have no idea how to fix this. When I check the timings in CRU for my second monitor, it's like the settings I applied are somehow stuck now, and won't revert back to whatever the defaults were. I'm not sure what to do, and am hoping you might have some suggestions.

Thank you for any help you can offer.

[ToastyX]

(11-02-2019 10:34 AM)Ambro Wrote:  I've tried using the reset feature of CRU and rebooting, even downloaded and ran DDU to blow out the drivers. Last thing I just tried was running regedit as the system user, and blowing out the two registry keys associated with my monitor in Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\DISPLAY

I rebooted, checked the refresh and it's still locked at 120hz. I'm baffled by this, and have no idea how to fix this. When I check the timings in CRU for my second monitor, it's like the settings I applied are somehow stuck now, and won't revert back to whatever the defaults were. I'm not sure what to do, and am hoping you might have some suggestions.

What do you mean by locked at 120 Hz? Are there no other refresh rates available? Not even 60 Hz?

Running reset-all.exe removes all EDID overrides and so does DDU, so I doubt anything's left over.

[ToastyX]

(11-01-2019 09:59 PM)urkqsrk Wrote:  Hello, I have overclocked my monitor Philips 240V5QDSB (1920x1080 60hz stock) and reach 77hz with just add custom resolution in nvidia control panel (gtx 1060, HDMI cable) , now I trying to overclock with CRU, but even with 600x400 resolution I can't reach 78hz. My monitor just refuse to go over 77hz, do you have any idea what can cause this problem and is it possible my monitor to be locked up to 77hz?

Your monitor won't allow more than 77 Hz.

[Ambro]

(11-02-2019 10:52 AM)ToastyX Wrote:  

(11-02-2019 10:34 AM)Ambro Wrote:  I've tried using the reset feature of CRU and rebooting, even downloaded and ran DDU to blow out the drivers. Last thing I just tried was running regedit as the system user, and blowing out the two registry keys associated with my monitor in Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\DISPLAY

I rebooted, checked the refresh and it's still locked at 120hz. I'm baffled by this, and have no idea how to fix this. When I check the timings in CRU for my second monitor, it's like the settings I applied are somehow stuck now, and won't revert back to whatever the defaults were. I'm not sure what to do, and am hoping you might have some suggestions.

What do you mean by locked at 120 Hz? Are there no other refresh rates available? Not even 60 Hz?

Running reset-all.exe removes all EDID overrides and so does DDU, so I doubt anything's left over.

The monitor I changed the timings on now only has 60, 100, and 120hz available. When I check the monitor timings in CRU, they still reflect settings that I applied post running reset-all and DDU, so it appears as if those settings persist in the monitor somehow. I did use your export feature in the application, but when I import them back it doesn't seem to have any effect on the timings. I'm fairly confident the issue is that I cannot revert back to the timings for this monitor which differed from my primary monitor. I'm able to use 144hz at resolutions 1920x1080 and below, but not in my native resolution, 2560x1440. The primary monitor runs in 144hz @ 2560x1440.

Another strange abnormality on this monitor now, the output color format is now set to YCbCr422 for both 100 and 120hz, with no option for RGB. It will only go back to RGB mode for 60hz. This doesn't happen with the primary monitor.

[ToastyX]

(11-02-2019 05:32 PM)Ambro Wrote:  The monitor I changed the timings on now only has 60, 100, and 120hz available. When I check the monitor timings in CRU, they still reflect settings that I applied post running reset-all and DDU, so it appears as if those settings persist in the monitor somehow. I did use your export feature in the application, but when I import them back it doesn't seem to have any effect on the timings. I'm fairly confident the issue is that I cannot revert back to the timings for this monitor which differed from my primary monitor. I'm able to use 144hz at 1920x1080, but my native resolution, 2560x1440 only allows 120hz now. The primary monitor runs in 144hz @ 2560x1440.

Another strange abnormality on this monitor now, the output color format is now set to YCbCr422 for both 100 and 120hz, with no option for RGB. It will only go back to RGB mode for 60hz. This doesn't happen with the primary monitor.

Are the monitors BenQ XL2730? Are the monitors connected using DisplayPort or HDMI? What video card to you have?

Run reset-all.exe and reboot. Then export each monitor to a file and post them here, and post the file you saved before making any changes.

[Ambro]

(11-02-2019 07:04 PM)ToastyX Wrote:  

(11-02-2019 05:32 PM)Ambro Wrote:  The monitor I changed the timings on now only has 60, 100, and 120hz available. When I check the monitor timings in CRU, they still reflect settings that I applied post running reset-all and DDU, so it appears as if those settings persist in the monitor somehow. I did use your export feature in the application, but when I import them back it doesn't seem to have any effect on the timings. I'm fairly confident the issue is that I cannot revert back to the timings for this monitor which differed from my primary monitor. I'm able to use 144hz at 1920x1080, but my native resolution, 2560x1440 only allows 120hz now. The primary monitor runs in 144hz @ 2560x1440.

Another strange abnormality on this monitor now, the output color format is now set to YCbCr422 for both 100 and 120hz, with no option for RGB. It will only go back to RGB mode for 60hz. This doesn't happen with the primary monitor.

Are the monitors BenQ XL2730? Are the monitors connected using DisplayPort or HDMI? What video card to you have?

Run reset-all.exe and reboot. Then export each monitor to a file and post them here, and post the file you saved before making any changes.

Both monitors are the BenQ XL2730 and are both connected via display port to an EVGA 1070 FTW running the latest 441.08 driver. I tried switching out the DP cable, both are certified, no effect there. I also tried unplugging my primary monitor, leaving only the secondary plugged in, and tried switching the DP positions on the graphics card.

I've done as you've instructed - both sets of files are included as attachments to this thread. Thank you for taking the time to help me troubleshoot this issue.

[ToastyX]

(11-02-2019 07:26 PM)Ambro Wrote:  Both monitors are the BenQ XL2730 and are both connected via display port to an EVGA 1070 FTW running the latest 441.08 driver. I tried switching out the DP cable, both are certified, no effect there. I also tried unplugging my primary monitor, leaving only the secondary plugged in, and tried switching the DP positions on the graphics card.

I've done as you've instructed - both sets of files are included as attachments to this thread. Thank you for taking the time to help me troubleshoot this issue.

I think you are confused about what the defaults are. There is no difference between the two monitors other than the manufacture date, and there is no difference between the current and backup for each monitor. What was supposed to be different? I don't see anything unusual that would indicate something was changed, and both monitors have 2560x1440 @ 144 Hz defined, so that's not the problem.

The real problem is the video card seems to be negotiating a lower DisplayPort speed with that monitor for some reason, which wouldn't be because of the timing parameters. RGB is always supposed to be available, so the fact that only YCbCr 4:2:2 is available at 120 Hz indicates a bandwidth limitation. Since you already swapped the cables and the ports, try unplugging the monitor's power for a few minutes to reset it just in case there was a firmware glitch.

[Ambro]

(11-02-2019 08:13 PM)ToastyX Wrote:  

(11-02-2019 07:26 PM)Ambro Wrote:  Both monitors are the BenQ XL2730 and are both connected via display port to an EVGA 1070 FTW running the latest 441.08 driver. I tried switching out the DP cable, both are certified, no effect there. I also tried unplugging my primary monitor, leaving only the secondary plugged in, and tried switching the DP positions on the graphics card.

I've done as you've instructed - both sets of files are included as attachments to this thread. Thank you for taking the time to help me troubleshoot this issue.

I think you are confused about what the defaults are. There is no difference between the two monitors other than the manufacture date, and there is no difference between the current and backup for each monitor. What was supposed to be different? I don't see anything unusual that would indicate something was changed, and both monitors have 2560x1440 @ 144 Hz defined, so that's not the problem.

The real problem is the video card seems to be negotiating a lower DisplayPort speed with that monitor for some reason, which wouldn't be because of the timing parameters. RGB is always supposed to be available, so the fact that only YCbCr 4:2:2 is available at 120 Hz indicates a bandwidth limitation. Since you already swapped the cables and the ports, try unplugging the monitor's power for a few minutes to reset it just in case there was a firmware glitch.

Despite the version of the monitor being the same, they're different model years, and the panels are different between both models and have different timings. When I first downloaded CRU, I looked at the timings for both and the secondary monitor I'm having issues with had different timings. When I went through the process of trying to get both monitors @ 143hz to support GSYNC (which they don't do by default ), I was having an issue with the second monitor(problem one) whereby it was displaying a black screen every time I would go into 143hz. To remedy this, I went into the primary monitor that was working correctly, and by hand, copied each of the timings to a text file so that I could replicate the same settings on the second monitor. As soon as i did this, the second monitor was syncing at 143hz, and everything was fine. At some point in the past few weeks for reasons unknown, the second monitor was suddenly unable to sync at 143/144hz, and is now demonstrating the issue I've explained. Both of these monitors did 144hz at my native resolution prior to this change. After using your reset tool, going into CRU shows that the timings for both of these monitors is the same, i.e. post the changes I made. I know the secondary panel has different timings but I'm not entirely sure what they used to be as I didn't take a screen capture.

The question I have is, when you adjust timings for the monitor, where is this preserved? does it get written back to the monitor or is it possible that the timing adjustment caused permanent damage to the panel and that's the reason why the native 144hz is now not supported? Just trying to determine if there's a way to get the monitor back to it's original default factory timings.

[ToastyX]

(11-02-2019 08:44 PM)Ambro Wrote:  Despite the version of the monitor being the same, they're different model years, and the panels are different between both models and have different timings. When I first downloaded CRU, I looked at the timings for both and the secondary monitor I'm having issues with had different timings. When I went through the process of trying to get both monitors @ 143hz to support GSYNC (which they don't do by default ), I was having an issue with the second monitor(problem one) whereby it was displaying a black screen every time I would go into 143hz. To remedy this, I went into the primary monitor that was working correctly, and by hand, copied each of the timings to a text file so that I could replicate the same settings on the second monitor. As soon as i did this, the second monitor was syncing at 143hz, and everything was fine. At some point in the past few weeks for reasons unknown, the second monitor was suddenly unable to sync at 143/144hz, and is now demonstrating the issue I've explained. Both of these monitors did 144hz at my native resolution prior to this change. After using your reset tool, going into CRU shows that the timings for both of these monitors is the same, i.e. post the changes I made. I know the secondary panel has different timings but I'm not entirely sure what they used to be as I didn't take a screen capture.

The question I have is, when you adjust timings for the monitor, where is this preserved? does it get written back to the monitor or is it possible that the timing adjustment caused permanent damage to the panel and that's the reason why the native 144hz is now not supported? Just trying to determine if there's a way to get the monitor back to it's original default factory timings.

The monitor is already back to the original defaults, but you refuse to believe this. CRU only creates EDID overrides in the registry, which you wiped out three different ways. The timing parameters in the EDID only tell the graphics driver how to formulate the video signal. Nothing is written to the monitor.

Different panels don't need different timing parameters. If the timing parameters between the two monitors were different in CRU, then the backup files should have reflected this. I know CRU did not mix up the monitors because the manufacture dates in the EDID are different. That's literally the only difference between the two monitors.

Besides that, the timing parameters would not cause the symptoms you described. 144 Hz should still be listed even if the timing parameters were different, and 100/120 Hz should not be YCbCr 4:2:2. This indicates a bandwidth problem, not a problem with the timing parameters. It sounds like the DisplayPort on the monitor is failing and can no longer negotiate the correct speed. This is usually a cable problem, but you already swapped the cables and ports, so that leaves the monitor.

This could be a firmware bug. I found instructions on how to reset the monitor:

1. Power off.
2. Hold down OSD buttons 3 and 4 and press power on while still holding buttons 3 and 4.
3. Keep buttons 3 and 4 pressed for 5 seconds, then release.
4. Press any of the OSD buttons and enter the factory menu.
5. Choose "CLEAR USER" to reset the monitor.
6. Unplug the monitor's power for a minute, then plug it back in.
7. Power on and see if you can choose 144 Hz now.

[Ambro]

(11-02-2019 10:11 PM)ToastyX Wrote:  

(11-02-2019 08:44 PM)Ambro Wrote:  Despite the version of the monitor being the same, they're different model years, and the panels are different between both models and have different timings. When I first downloaded CRU, I looked at the timings for both and the secondary monitor I'm having issues with had different timings. When I went through the process of trying to get both monitors @ 143hz to support GSYNC (which they don't do by default ), I was having an issue with the second monitor(problem one) whereby it was displaying a black screen every time I would go into 143hz. To remedy this, I went into the primary monitor that was working correctly, and by hand, copied each of the timings to a text file so that I could replicate the same settings on the second monitor. As soon as i did this, the second monitor was syncing at 143hz, and everything was fine. At some point in the past few weeks for reasons unknown, the second monitor was suddenly unable to sync at 143/144hz, and is now demonstrating the issue I've explained. Both of these monitors did 144hz at my native resolution prior to this change. After using your reset tool, going into CRU shows that the timings for both of these monitors is the same, i.e. post the changes I made. I know the secondary panel has different timings but I'm not entirely sure what they used to be as I didn't take a screen capture.

The question I have is, when you adjust timings for the monitor, where is this preserved? does it get written back to the monitor or is it possible that the timing adjustment caused permanent damage to the panel and that's the reason why the native 144hz is now not supported? Just trying to determine if there's a way to get the monitor back to it's original default factory timings.

The monitor is already back to the original defaults, but you refuse to believe this. CRU only creates EDID overrides in the registry, which you wiped out three different ways. The timing parameters in the EDID only tell the graphics driver how to formulate the video signal. Nothing is written to the monitor.

Different panels don't need different timing parameters. If the timing parameters between the two monitors were different in CRU, then the backup files should have reflected this. I know CRU did not mix up the monitors because the manufacture dates in the EDID are different. That's literally the only difference between the two monitors.

Besides that, the timing parameters would not cause the symptoms you described. 144 Hz should still be listed even if the timing parameters were different, and 100/120 Hz should not be YCbCr 4:2:2. This indicates a bandwidth problem, not a problem with the timing parameters. It sounds like the DisplayPort on the monitor is failing and can no longer negotiate the correct speed. This is usually a cable problem, but you already swapped the cables and ports, so that leaves the monitor.

This could be a firmware bug. I found instructions on how to reset the monitor:

1. Power off.
2. Hold down OSD buttons 3 and 4 and press power on while still holding buttons 3 and 4.
3. Keep buttons 3 and 4 pressed for 5 seconds, then release.
4. Press any of the OSD buttons and enter the factory menu.
5. Choose "CLEAR USER" to reset the monitor.
6. Unplug the monitor's power for a minute, then plug it back in.
7. Power on and see if you can choose 144 Hz now.

Your suggestions of keeping the monitor powered off (I did it for an hour or so) and using the CLEAR USER to reset the monitor totally fixed the problem! I'm back at 144hz. WHEW. Thank you so much for your help with this Toasty. I'll be donating to you for all of the trouble.