Custom Resolution Utility (CRU)

[traderdude123]

(12-09-2020 04:22 PM)ToastyX Wrote:  

(12-09-2020 03:58 PM)traderdude123 Wrote:  I cannot believe what just happened.I imported the lg-cx-48gbps.dat file.

I m getting 4k/120hz/ycbcr444/12bpc on my lg cx which has only 40Gbps.

but 4k/120hz/ycbcr444/12bpc requires full 48 gbps.

How is this even possible?

I changed the max to 48 Gbps (12 x 4 lanes). A future version of CRU will be able to edit the value. Sometimes TVs will support features that aren't listed in the EDID like higher refresh rates or color formats. I didn't know what the FRL rate was for until now.

Either way toastyx,

YOU ARE A GENIUS!!!!

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(12-09-2020 04:22 PM)ToastyX Wrote:  

(12-09-2020 03:58 PM)traderdude123 Wrote:  I cannot believe what just happened.I imported the lg-cx-48gbps.dat file.

I m getting 4k/120hz/ycbcr444/12bpc on my lg cx which has only 40Gbps.

but 4k/120hz/ycbcr444/12bpc requires full 48 gbps.

How is this even possible?

I changed the max to 48 Gbps (12 x 4 lanes). A future version of CRU will be able to edit the value. Sometimes TVs will support features that aren't listed in the EDID like higher refresh rates or color formats. I didn't know what the FRL rate was for until now.

Just so i don't get carried away.

Will this affect my TV in any way?

Also this means that LG CX always had support for 48Gbps , but they advertised it as only 40 Gbps. Is my understanding correct?

They could patch it in the future firmware versions, correct?

[ToastyX]

(12-09-2020 04:24 PM)traderdude123 Wrote:  Just so i don't get carried away.

Will this affect my TV in any way?

Also this means that LG CX always had support for 48Gbps , but they advertised it as only 40 Gbps. Is my understanding correct?

They could patch it in the future firmware versions, correct?

That's possible. If it displays correctly, I don't think there will be a problem, but technically you are running it outside of their intended specifications.

[gjaky]

Hi There,

I have been using CRU for years with pleasure on Win 7. Recently I decided to upgrade my HTPC ( which is based on an AMD Athlon 5150 APU) to Win 10 and I basically can't get the things working right anymore...
My display is a "high-end" CRT projector which connects through VGA connector and RGBHV cable - no EDID information.
My goal resolution is 1920*1080i 120Hz with custom timings.
I have went through several AMD driver versions too, the problem is the following:
Some AMD drivers support built in custom resolutions, which kinda work, but the output gamma is messed up and neither the driver's nor the windows' color correction adjustments are working, the output picture is too dark. Some other AMD drivers can do the color output thing right, but for some reason these versions do not have built in tool for resolution adjustment. Here would come the CRU. But whenever I add any custom resolution slot (does not matter whether I actually use it or not) after restart the windows background keeps flashing every few seconds. This flashing is looking like as if the video driver would reset itself all the time because the mouse also jumps back to screen centre most of the time. Very annoying... Running reset-all.exe solves this instantly (but I also loose my custom resolution.)
Needless to say that all this was working perfectly under Win 7.
Any help would be appreciated!

[papg39-q]

Hello!
I have a Lenovo ThinkPad L480 with me at the moment but cannot seem to overclock the built-in-display following numerous successes on other hardware using CRU.

After punching in some numbers and restarting Windows, the new refresh rates never appear under advanced display settings as an option to select.
Even removing the original 48Hz and 60Hz refresh rates, but leaving only a single custom setting set by myself, has no effect. Windows will once again ignore anything that I've set and only provide 48Hz and 60Hz as selectable options.

CRU lists the display name as "LEN40A9" but the panel itself seems to be an "AUO B140HAK01.0" according to HWInfo.
Does anyone have any ideas as to why this may be the case and if so, how might I be able to resolve it?

Thanks in advance!

[ToastyX]

(12-11-2020 01:12 AM)papg39-q Wrote:  After punching in some numbers and restarting Windows, the new refresh rates never appear under advanced display settings as an option to select.
Even removing the original 48Hz and 60Hz refresh rates, but leaving only a single custom setting set by myself, has no effect. Windows will once again ignore anything that I've set and only provide 48Hz and 60Hz as selectable options.

Try the alternative method. If that doesn't work, then the driver is ignoring EDID overrides for some reason.

"LEN40A9" is just the PnP ID of the display, not the model of the panel. LEN is Lenovo's manufacturer ID.

[ToastyX]

(12-10-2020 09:03 AM)gjaky Wrote:  Some AMD drivers support built in custom resolutions, which kinda work, but the output gamma is messed up and neither the driver's nor the windows' color correction adjustments are working, the output picture is too dark. Some other AMD drivers can do the color output thing right, but for some reason these versions do not have built in tool for resolution adjustment. Here would come the CRU. But whenever I add any custom resolution slot (does not matter whether I actually use it or not) after restart the windows background keeps flashing every few seconds. This flashing is looking like as if the video driver would reset itself all the time because the mouse also jumps back to screen centre most of the time. Very annoying... Running reset-all.exe solves this instantly (but I also loose my custom resolution.)
Needless to say that all this was working perfectly under Win 7.
Any help would be appreciated!

That's a driver bug that affects analog connections without EDIDs. That bug was introduced years ago. I don't think they'll ever fix it. The best solution would be to get an active HDMI-VGA adapter that sends its own EDID if one isn't available. I think some of the cheaper adapters will do this, but I'm not sure which ones because it's often not an advertised feature.

[gjaky]

(12-11-2020 03:45 AM)ToastyX Wrote:  

(12-10-2020 09:03 AM)gjaky Wrote:  Some AMD drivers support built in custom resolutions, which kinda work, but the output gamma is messed up and neither the driver's nor the windows' color correction adjustments are working, the output picture is too dark. Some other AMD drivers can do the color output thing right, but for some reason these versions do not have built in tool for resolution adjustment. Here would come the CRU. But whenever I add any custom resolution slot (does not matter whether I actually use it or not) after restart the windows background keeps flashing every few seconds. This flashing is looking like as if the video driver would reset itself all the time because the mouse also jumps back to screen centre most of the time. Very annoying... Running reset-all.exe solves this instantly (but I also loose my custom resolution.)
Needless to say that all this was working perfectly under Win 7.
Any help would be appreciated!

That's a driver bug that affects analog connections without EDIDs. That bug was introduced years ago. I don't think they'll ever fix it. The best solution would be to get an active HDMI-VGA adapter that sends its own EDID if one isn't available. I think some of the cheaper adapters will do this, but I'm not sure which ones because it's often not an advertised feature.

Thank you!
I came to the same conclusion -by the hard way... I've spent like 10 full hours to figure this out :/
But in the end I managed to make it work, I installed the original display driver that was supplied with the motherboard: Catalyst 13.something. Obviously from well before Win 10 times, nevertheless it went up smoothly, and now it works as I expect, I hope Win 10 will not want to update it...

[lanfeust9]

I was wondering if someone would have an idea to solve this use case:
- 43" 4k TV 3840*2160 used as a monitor
- my goal is to have a sort of ultrawide resolution starting vertically at the bottom of the screen and therefore not using a large part of the top of the TV vertically (I do not want the ultrawide resolution to be displayed in the middle of the screen vertically speaking)

At this point I understand I need to tweak both the resolution and vertical back porch using CRU:
- new resolution created -> 3840 * 1610
- vertical back porch value increased by 550 = 2160-1610 (value increased from the original default v back porch setting value for 3840*2160 that was set to 72), so new value set to 622

However, after loading this custom resolution I always get the content displayed as 3840 * 1610 but in the middle of the TV with identical black bars at the top and bottom ; while my goal was to start the display at the bottom and have a single larger black bar at the top.

[ToastyX]

(12-11-2020 04:42 PM)lanfeust9 Wrote:  - my goal is to have a sort of ultrawide resolution starting vertically at the bottom of the screen and therefore not using a large part of the top of the TV vertically (I do not want the ultrawide resolution to be displayed in the middle of the screen vertically speaking)

That's not possible with custom resolutions.

[zaino]

Monitor: Gigabyte g34WQC, 3440x1440 144hz, Freesync premium
Connection: Display Port
GPU: RTX 3080
OS: windows 10 64x

I edit the freesync range in CRU using the Edit button on the active monitor, since I'm on DisplayPort. I set it to 90-144hz, Ok twice, restart64.exe.
Then I run any game capped at 60hz, and the OSD refresh rate with G-Sync on, is at 60hz, which is wrong.
If the ranges were effectively changed, with G-Sync the OSD refresh rate should be at 120hz with LFC.
Instead LFC kicks always at around 48-50, which is the original range of the monitor.
What am I doing wrong here?