Custom Resolution Utility (CRU)

[mathieulhe]

(12-16-2020 07:56 PM)ToastyX Wrote:  

(12-16-2020 03:24 PM)mathieulhe Wrote:  Hi, I have tried your file and it works great at 4k 12bits 120fps, but as soon as I apply the file in CRU and run reset64, the "enable g-sync" option from the nvidia control panel disappears, almost as if the gpu driver does not detect the display as g-sync compatible.

The other EDID didn't have VRR defined, so maybe it was disabled.

Try this:

So, I did some more extended tests on the EDID profile you shared, although it does work properly, if I go to the hidden hdmi diagnostic menu on the LG CX, using the new EDID, even at 2160p 10 bit 120hz (using 4*10gbps lanes as if I was using the original EDID), I get a lot of PHY errors in the hdmi data stream compared to when using the default EDID, did you do anything other than incrementing the FRL?

P.S. I did check, when selecting 10 bit instead of 12 using the new vrr EDID, it does sync using 4*10gbps lanes (it doesn't just send 10gbps in a 12gbps lane), changing to 12 bits syncs to 4*12gbps lanes, so technically the sync bandwidth should be identical when using 2160p 10 bit 120hz on the original and modified EDID, so I don't understand why the modified one causes additional errors in the hdmi stream.