Custom Resolutions with the Samsung G9 and nVidia

[kashinoda]

(02-22-2021 01:33 PM)ToastyX Wrote:  That monitor uses purely DisplayID when 240 Hz is active, so the EDID doesn't have the required information. I don't know if it's possible to override it.

You might have better luck adding 3440x1440 as a scaled resolution. For NVIDIA, search the registry for NV_Modes and add 3440x1440 in there.

Thanks for your reply.

This has got me half way there, I can now select 3440x1440 and it works in game.
NV_Modes:
{*}S 720x480x8,16,32,64=1;
720x576x8,16,32,64=8032;
SHV 1280x720x8,16,32,64 1680x1050x8,16,32,64 1920x1080x8,16,32,64 2048x1536x8,16,32,64=1;
1920x1440x8,16,32,64=1F;
640x480x8,16,32,64 800x600x8,16,32,64 1024x768x8,16,32,64=1FFF;
1920x1200x8,16,32,64=3F;
1600x900x8,16,32,64=3FF;
2560x1440x8,16,32,64 2560x1600x8,16,32,64=7B;
1600x1024x8,16,32,64 1600x1200x8,16,32,64=7F;
1280x768x8,16,32,64 1280x800x8,16,32,64 1280x960x8,16,32,64 1280x1024x8,16,32,64 1360x768x8,16,32,64 1366x768x8,16,32,64=7FF;
1152x864x8,16,32,64=FFF;
3440x1440x8,16,32,64=1FFF;

It seems the 1FFF mask is ignored, I get 60hz and 120hz options but not 240hz. I can set the mask to 1 and I get the same options.

That might just be it for this monitor, I've also tried editing the monitor.inf like so:

[C49G9xTdp.AddReg]
HKR,"MODES\5120,1440",Mode1,,"30-183,50-120,+,-"
HKR,,ICMProfile,0,"C49G9xT.icm"

[C49G9xTdp.AddReg]
HKR,"MODES\5120,1440",Mode1,,"30-357,50-240,+,+"
HKR,"MODES\3440,1440",Mode1,,"30-357,50-240,+,+"
HKR,,ICMProfile,0,"C49G9xT.icm"