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Custom Resolution Utility (CRU)
10-01-2021, 09:30 AM (Last edited: 10-01-2021, 09:58 AM by S0larSoul)
Post: #6101
RE: Custom Resolution Utility (CRU)
(10-01-2021 03:49 AM)ToastyX Wrote:  
(09-30-2021 12:38 PM)S0larSoul Wrote:  Hi! Could you please help me with CRU? My setup is the following:
GTX 1066
TCL 50DP600 (4k HDMI 2.0 TV)
10m HDMI Cable (9 GBps)

Since I have such a long cable (I need it to be this long, and I couldn't find any better for halfway reasonable price), it has limited bandwidth - 9 GBps. What I want is to use my TV at 4k@60@YCbCr420, but support other resolutions and refresh rates at 420. It works pretty much perfectly when set up 4k@60@YCbCr420, but I have two major issues, which come down to TV's EDID, specifically combination of resolution, refresh rate and chroma subsampling. First one - when I try to run any other refresh rate other than 60 (23.976 specifically, but 30 and 50 would be nice to have too) I can't set 420, only RGB, 444, 422. Actually, I can't even set 420 for 1080p, no matter refresh rate. On top of that, I have an issue considering limited and full RGB spaces. When 4k@60@YCbCr420 is set, TV for whatever mysterios reason to me, accepts and shows colors as if they were in full RGB instead of limited. BUT when I switch to 422, it shows as it is limited RGB.
Long story short - when TV switches to other than 60Hz refresh rate, it messes up the colors. I could live with "real" limited color space, but if it was actually limited all the time, not only when refresh rate switch occures.
Oh, and on top of that, games don't work on non-native resolutions in fullscreen (scaling is set to be done on GPU), just no signal. My best guess is that is somehow related to the issues above, but I don't know.
Could there be something done with CRU? I've attached exported .bin from my TV to take a look at.
Last I checked, NVIDIA only supports 4:2:0 with 3840x2160 @ 50/60 Hz and higher, and GPU scaling won't work with 4:2:0, so what you want can't be done. Are you not able to get 3840x2160 @ 60 Hz with 4:2:2? That's only 12 Gbps. YCbCr is supposed to be always limited range. What happens if you try lower resolutions with RGB instead of YCbCr? The first detailed resolution is what GPU scaling will scale to, so try making that 1920x1080 @ 60 Hz to avoid the black screen. The best solution might be to get an HDMI signal booster and two 5m cables.

Thanks for the tips. Yeah, I can't use 422, the bandwidth limits me. And the whole mess with resolutions and 420 now makes sense (except for the TV, which shows 420 limited as full, but 1080@422 as limited - probably some stuff in the TV firmware itself). I've ordered what you advised - repeater and 2 nice 5m cables. Thanks again!
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10-04-2021, 02:34 PM
Post: #6102
RE: Custom Resolution Utility (CRU)
Hello! I have some problem with CRU, could you help me pls!
Here my setup:
GTX 1050/Intel Graphic HD 630 (Laptop)
Internal Laptop Display (AUO41ED-generic pnp monitor)

I had used CRU to overclock my monitor's refresh rate from 60hz to 100hz for a year, it worked perfectly, until few days ago, it suddenly stopped working. My custom refresh rate was disappeared. I used CRU and added that refresh rate again, but when I opened display settings to change refresh rate, my custom refresh rate didn't show up. I've tried reinstalling my graphic driver, installed older driver version and even reset my window, it still didn't work.

To describe the problem more carefully, here's a video (Sorry for the bad quality, I have to use my phone to record because restart.exe file interupt OBS studio):
https://drive.google.com/file/d/15axyMDz...sp=sharing
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10-04-2021, 04:23 PM
Post: #6103
RE: Custom Resolution Utility (CRU)
(10-04-2021 02:34 PM)4kain3ko Wrote:  I had used CRU to overclock my monitor's refresh rate from 60hz to 100hz for a year, it worked perfectly, until few days ago, it suddenly stopped working. My custom refresh rate was disappeared. I used CRU and added that refresh rate again, but when I opened display settings to change refresh rate, my custom refresh rate didn't show up. I've tried reinstalling my graphic driver, installed older driver version and even reset my window, it still didn't work.
You say 100 Hz, but the video shows 102 Hz. Did you make any changes or was this by default? I don't see a * next to the active status, which means there is no override. Is there another active monitor in the monitor list?
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10-04-2021, 05:04 PM
Post: #6104
RE: Custom Resolution Utility (CRU)
(10-04-2021 04:23 PM)ToastyX Wrote:  
(10-04-2021 02:34 PM)4kain3ko Wrote:  I had used CRU to overclock my monitor's refresh rate from 60hz to 100hz for a year, it worked perfectly, until few days ago, it suddenly stopped working. My custom refresh rate was disappeared. I used CRU and added that refresh rate again, but when I opened display settings to change refresh rate, my custom refresh rate didn't show up. I've tried reinstalling my graphic driver, installed older driver version and even reset my window, it still didn't work.
You say 100 Hz, but the video shows 102 Hz. Did you make any changes or was this by default? I don't see a * next to the active status, which means there is no override. Is there another active monitor in the monitor list?

Oh, I just round it down, and yes there is another monitor in monitor list which has the same name with the active monitor but it doesn't have active status behind.

And here's another video of me adding a custom refresh rate. This time, after I run restart.exe file, there is a * next to active status, but my custom refresh rate still doesn't show up.
https://drive.google.com/file/d/15baMshR...sp=sharing
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10-04-2021, 05:20 PM
Post: #6105
RE: Custom Resolution Utility (CRU)
(10-04-2021 05:04 PM)4kain3ko Wrote:  Oh, I just round it down, and yes there is another monitor in monitor list which has the same name with the active monitor but it doesn't have active status behind.
I'm confused about where 102 Hz is coming from. Did you add 102 Hz or was it there by default? If you added it, there should have been a * already.
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10-04-2021, 05:39 PM
Post: #6106
RE: Custom Resolution Utility (CRU)
(10-04-2021 05:20 PM)ToastyX Wrote:  
(10-04-2021 05:04 PM)4kain3ko Wrote:  Oh, I just round it down, and yes there is another monitor in monitor list which has the same name with the active monitor but it doesn't have active status behind.
I'm confused about where 102 Hz is coming from. Did you add 102 Hz or was it there by default? If you added it, there should have been a * already.

I added 102hz myself, I don't know why it become like that. Now, even after I run reset-all.exe file, it still there.
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10-05-2021, 09:08 AM
Post: #6107
RE: Custom Resolution Utility (CRU)
(10-04-2021 05:20 PM)ToastyX Wrote:  
(10-04-2021 05:04 PM)4kain3ko Wrote:  Oh, I just round it down, and yes there is another monitor in monitor list which has the same name with the active monitor but it doesn't have active status behind.
I'm confused about where 102 Hz is coming from. Did you add 102 Hz or was it there by default? If you added it, there should have been a * already.

And now it's working again, and I still don't know why lol
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10-06-2021, 12:38 PM (Last edited: 10-06-2021, 12:39 PM by mlleemiles)
Post: #6108
RE: Custom Resolution Utility (CRU)
Windows 11 seems to have broken the program.. EDID override doesnt have any effect, sad
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10-07-2021, 08:58 PM (Last edited: 10-07-2021, 08:59 PM by PersonPersonMagic)
Post: #6109
RE: Custom Resolution Utility (CRU)
Hi, I've got an Intel GPU and a 3840x1600 144hz monitor over TB3 that Windows won't recognize as such. I'm trying to create a profile to manually push it to its refresh rate max. Best I can do at 3830x1600 at 97 HZ. What settings can I try to get it to 120 to 144?
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10-08-2021, 12:02 PM
Post: #6110
RE: Custom Resolution Utility (CRU)
So, after experimenting around CRU for the quest to remove PWM by matching refresh rate with pwm frequency (thus achieving strobing/BFI), I managed to get a +400hz overclock on my AUO13ED panel in my Elitebook 8570p, but I have a problem. The image seems to be GPU scaled and skewed/distorted horribly, as soon as I set it above 100hz (so, 1080p above 100hz just doesnt display, lower res 101hz displays but skewed it seems to be a LVDS limit of 240mhz pixel clock in play here?) as shown here:
https://cdn.discordapp.com/attachments/2...134015.jpg
I know I don't frameskip on 240hz, cannot test further up as it doesn't want to sync on 360hz and 420hz
I cannot remove 1080p with CRU at all for some reason, running on W10 21H1, it still displays 1080p 60hz :/
Is there any way I could salvage the panel and perhaps take advantage of these higher refresh rates with some LVDS to HDMI/DP adapter and use it on my desktop?
Would be lovely if Toasty could chime in on this!
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