I have a (First 301 GD Live) monitor with a 2560×1600 native resolution that intermittently fails to identify itself properly to windows. I have just moved to a new office and when trying to get started again the monitor is just not being recognized. Windows just says it’s a "DVI" monitor. Windows now shows that the "recommended" resolution is 1280×800. If I go to advanced display settings and list all modes and then select 2560×1600/60Hz then the "desktop resolution" becomes 2560×1600 but the Active Signal Resolution remains at 1280×800 and the picture is horrid – like an upscaled low resolution image.
I tried setting the resolution via the NVIDIA Control Panel to 2560×1600 but the Active Signal Resolution remains at 1280×800 and so the picture is still awful.
I also tried power cycling the monitor itself several times to no avail (this had helped in the past).
My graphics card is a GeForce GTX 1650 Super.
Is it possible to instruct the graphics card to send out a 2560×1600 signal that you specify, regardless of whatever monitor the computer thinks is at the other end of the cable?