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Custom Resolution Utility (CRU)
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08-11-2023, 08:41 AM
Post: #7571
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Custom Resolution Utility (CRU)
(08-11-2023 01:04 AM)ToastyX Wrote:(08-09-2023 09:41 PM)Soylent Wrote: Hello, I'm having a similar issue. I just upgraded from an Nvidia 2080 to a 3080 on my Windows 11 desktop, and now my Samsung QN95B TV will not work on anything except 144hz when Gaming Mode is enabled. I can change resolutions, but if I select 120hz or 100hz, I just get an HDMI disconnect screen. I noticed in CRU that when Gaming mode is enabled, there are 3 "Default Extension Blocks" in the Extension blocks section, but all 3 of them are empty. I'm not sure where it's even getting the 144hz from, but HDR 10-bit RGB and VRR seem to be working normally. However, if I disable Gaming mode CRU shows one entry for "CTA-861" with a bunch of settings in it, but with Gaming Mode disabled the maximum settings in Windows and NVCP is 60hz, no HDR, and only YCBCR444 color. It certainly should be able to do 120hz and HDR without Gaming Mode enabled.The issue you're having is unrelated to CRU not being able to read the extension blocks. There's some NVIDIA-specific driver limitation involved, probably the GPU scaling issue that Ronyn77 mentioned because NVIDIA can't scale with DSC. Is there a method to verify whether the video card is utilizing DSC for output and scaling? |
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08-11-2023, 11:16 AM
Post: #7572
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RE: Custom Resolution Utility (CRU)
(08-11-2023 01:05 AM)ToastyX Wrote:(08-09-2023 08:16 PM)Ronyn77 Wrote: However, it doesn't appear to be working. Please check the attached pictures for reference.I wonder if there's a display-specific workaround in NVIDIA's driver that's causing this. Try using the "Edit..." button at the top and change the device ID to something else, like ABC1234. Also, you don't need LPCM three times. Just the first one with 8 channels covers everything. It appears that the configuration changes we've applied are having no effect. It's possible that the TV might also play a role, though I'm uncertain. I'd like to bring to your attention that the HDMI 2.1 bandwidth isn't the full 48 Gbps, but rather 40 Gbps. This could potentially contribute to other issues. As you can observe from the included images, I initially adjusted the audio formats. I increased LPCM from 6 to 8 channels and modified AC-3 from 6 to 8 channels, raising the kbps from 640 to 960. I changed the speaker configuration to 7.1 too. Afterward, I restarted both the video card and the PC, and upon checking with Moninfo, it's evident that the information remained unchanged. Subsequently, I followed the suggestion to alter the Device ID, but regrettably, it didn't yield any change in the situation. https://imgur.com/a/pfQPm7o |
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08-11-2023, 01:58 PM
Post: #7573
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RE: Custom Resolution Utility (CRU)
(08-11-2023 11:16 AM)Ronyn77 Wrote: It appears that the configuration changes we've applied are having no effect. It's possible that the TV might also play a role, though I'm uncertain. I'd like to bring to your attention that the HDMI 2.1 bandwidth isn't the full 48 Gbps, but rather 40 Gbps. This could potentially contribute to other issues.MonInfo won't tell you what's taking effect. It's showing you the original EDID. Your screen shot with the changed ID shows it's active. Try the changed device ID with the "Extension override" data block deleted. Don't change AC-3. Delete the LPCM with 2 channels. If that's not working after restarting, run EDID-test.exe and post the test.txt file. |
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08-11-2023, 02:00 PM
Post: #7574
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RE: Custom Resolution Utility (CRU)
(08-11-2023 01:37 AM)l337fool Wrote: No (and also it shows the need to restart in the profile drop down even when I do).Just add two CTA-861 extension blocks with nothing in them. If that doesn't help, try using the "Edit..." button at the top and change the device ID to something else such as ABC1234, and delete the "Extension override" data block. |
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08-11-2023, 07:54 PM
Post: #7575
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RE: Custom Resolution Utility (CRU)
(08-11-2023 01:58 PM)ToastyX Wrote:(08-11-2023 11:16 AM)Ronyn77 Wrote: It appears that the configuration changes we've applied are having no effect. It's possible that the TV might also play a role, though I'm uncertain. I'd like to bring to your attention that the HDMI 2.1 bandwidth isn't the full 48 Gbps, but rather 40 Gbps. This could potentially contribute to other issues.MonInfo won't tell you what's taking effect. It's showing you the original EDID. Your screen shot with the changed ID shows it's active. Try the changed device ID with the "Extension override" data block deleted. Don't change AC-3. Delete the LPCM with 2 channels. If that's not working after restarting, run EDID-test.exe and post the test.txt file. Unfortunatelly it does not work : https://imgur.com/a/CGJKnD3 |
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08-11-2023, 10:32 PM
Post: #7576
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RE: Custom Resolution Utility (CRU)
(08-07-2023 12:35 PM)ToastyX Wrote:(08-02-2023 04:33 PM)maxiu Wrote: I seem to be having the idle power draw issue on my GPU. I tried using this tool to increase blanking for all my monitors but without success. I also tried lower resolutions but even using 60Hz with high blanking number doesn't help.To be able to change the memory clock with multiple monitors, all of the monitors must be perfectly synchronized so the blanking periods happen at the same time. This means all of the monitors must be using the same resolution and refresh rate, and the detailed resolution timing parameters must match exactly on all of the monitors. There's also a chance that the HDMI port might not be synchronized with the DisplayPorts, depending on the video card. Hello, following your suggestions I have adjusted my setup to the following: MAG274QRF-QD 2560 X 1440 144Hz DisplayPort LC27G5xT 2560 X 1440 144Hz DisplayPort LC27G5xT 2560 X 1440 144Hz DisplayPort I have applied CVT-RB standard profile on all of my monitors which set the parameters to match exactly with 103 blanking lanes, however the issue still persists. I've tried restarting, changing the display refresh rate back and forth but no change. Do you have any other ideas? Code: ----------------------------------------------- |
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08-12-2023, 12:14 AM
Post: #7577
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RE: Custom Resolution Utility (CRU)
(08-11-2023 10:32 PM)maxiu Wrote: Hello, following your suggestions I have adjusted my setup to the following:In theory, that should work unless there's some video card or driver limitation. I noticed the MSI monitor has FreeSync while the other two don't. Does disabling FreeSync make any difference? |
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08-12-2023, 12:14 AM
Post: #7578
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RE: Custom Resolution Utility (CRU)
(08-11-2023 07:54 PM)Ronyn77 Wrote: Unfortunatelly it does not work :NVIDIA's driver seems to be completely ignoring the EDID override no matter what. This is a driver bug that needs to be reported to NVIDIA. |
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08-12-2023, 01:01 AM
Post: #7579
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RE: Custom Resolution Utility (CRU)
(08-12-2023 12:14 AM)ToastyX Wrote: In theory, that should work unless there's some video card or driver limitation. I noticed the MSI monitor has FreeSync while the other two don't. Does disabling FreeSync make any difference? That was it! Finally the little electric oven under my desk is fixed. Thank you! |
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08-12-2023, 01:32 PM
Post: #7580
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RE: Custom Resolution Utility (CRU)
(08-11-2023 02:00 PM)ToastyX Wrote:(08-11-2023 01:37 AM)l337fool Wrote: No (and also it shows the need to restart in the profile drop down even when I do).Just add two CTA-861 extension blocks with nothing in them. If that doesn't help, try using the "Edit..." button at the top and change the device ID to something else such as ABC1234, and delete the "Extension override" data block. Added the two blank extension blocks but it didn't help. When I go to type over the ID the text is red and the ok button is greyed out. Maybe CRU's days are over for new Samsung TV owners with Nvidia GPUs. I can't help thinking whatever change either side made may have been intentional. I'm probably just giving them too much credit there though. |
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